devenv - #369
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…blic keys for cachix
…bstituters and trusted keys
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Note Other AI code review bot(s) detectedCodeRabbit has detected other AI code review bot(s) in this pull request and will avoid duplicating their findings in the review comments. This may lead to a less comprehensive review. 📝 WalkthroughSummary by CodeRabbit
✏️ Tip: You can customize this high-level summary in your review settings. WalkthroughIntegrates a new devenv into the flake and adds Changes
Sequence DiagramsequenceDiagram
participant Dev as Developer
participant Flake as flake.nix
participant Devenv as devenv.flakeModule
participant PKGS as PKGS (nixpkgs with overlays)
participant Shell as devenv.shells.default / devenv-cli
Note over Flake,Devenv: flake now imports and exposes devenv
Dev->>Flake: request dev shell or build
Flake->>Devenv: include devenv.flakeModule
Flake->>PKGS: provide { config, system, devenvRoot } and overlays
PKGS->>Shell: derive shell and package (devenv-cli)
Dev->>Shell: enter shell / run build
Shell-->>Dev: provide Node.js, bun, Neovim and enterShell message
Estimated code review effort🎯 4 (Complex) | ⏱️ ~45 minutes
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✨ Finishing touches
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Summary of ChangesHello @shunkakinoki, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed! This pull request primarily focuses on integrating 'devenv' to streamline the development environment setup using Nix. It also significantly enhances the Nix configuration by incorporating Cachix for improved caching and build performance, alongside various Makefile and flake adjustments to support these changes. Highlights
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Code Review
This pull request introduces devenv for managing the development environment and configures Cachix to speed up builds. The changes are well-structured, moving the dev shell definition to a dedicated devenv.nix file and updating the Makefile with new targets for devenv and cachix configuration. I have two main points of feedback. First, there's a contradiction between a commit message and the corresponding code change regarding the devenv package, which should be clarified. Second, the Cachix configuration is duplicated across several Nix files, which could be centralized to improve maintainability. Overall, these are solid improvements to the development setup.
| with pkgs; | ||
| [ | ||
| inputs.agenix.packages.${stdenv.hostPlatform.system}.default | ||
| inputs.devenv.packages.${stdenv.hostPlatform.system}.devenv |
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This change adds the devenv package to the home-manager configuration. However, one of the commit messages in the pull request description is fix: update flake.lock and remove devenv package from home-manager configuration, which is contradictory. Could you please clarify the intent here and align the commit message with the change? This discrepancy can be confusing for future code archeology.
| substituters = [ | ||
| "https://cache.nixos.org" | ||
| "https://devenv.cachix.org" | ||
| "https://cachix.cachix.org" | ||
| ]; | ||
| trusted-public-keys = [ | ||
| "cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY=" | ||
| "devenv.cachix.org-1:w1cLUi8dv3hnoSPGAuibQv+f9TZLr6cv/Hm9XgU50cw=" | ||
| "cachix.cachix.org-1:eWNHQldwUO7G2VkjpnjDbWwy4KQ/HNxht7H4SSoMckM=" | ||
| ]; |
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The Cachix substituters and trusted public keys are hardcoded here. I've noticed they are also duplicated in hosts/nixos/default.nix and nix-darwin/config/nix.nix. This duplication can make maintenance difficult, as any change needs to be applied in multiple places. To improve maintainability, consider defining these values in a central Nix file (e.g., in a new lib/cachix.nix) and importing them where needed. This would create a single source of truth for your cache configuration within your Nix code.
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Pull request overview
This PR integrates devenv as the primary development environment tool, replacing the previous basic devShells.default implementation. The changes configure devenv across all supported platforms (macOS via nix-darwin, NixOS, and Linux via home-manager) and set up Cachix caching infrastructure to improve build times.
Key changes:
- Added devenv as a flake input and integrated devenv.flakeModule into the flake-parts configuration
- Configured Cachix substituters (devenv.cachix.org and cachix.cachix.org) across all platform configurations with corresponding trusted public keys
- Created
devenv.nixfor declarative development shell configuration with Node.js, bun, and Neovim
Reviewed changes
Copilot reviewed 9 out of 11 changed files in this pull request and generated 6 comments.
Show a summary per file
| File | Description |
|---|---|
| flake.nix | Added devenv input and flakeModule integration; created devenv-cli package; replaced devShells.default with devenv.shells.default; refactored perSystem pkgs definition |
| flake.lock | Updated lock file with new devenv, cachix, git-hooks, and related dependencies; updated home-manager and nur versions |
| devenv.nix | New devenv shell configuration defining packages (nodejs, bun, neovim) and enterShell hook |
| nix-darwin/default.nix | Updated nix.nix import to pass username parameter for trusted-users configuration |
| nix-darwin/config/nix.nix | Added username parameter; configured substituters, trusted-public-keys, and trusted-users for Cachix |
| nix-darwin/config/homebrew.nix | Moved "codex" from brews to casks (correct categorization for GUI application) |
| hosts/nixos/default.nix | Added devenv.cachix.org and cachix.cachix.org substituters with trusted public keys |
| hosts/linux/default.nix | Added nix configuration block with Cachix substituters and trusted-public-keys |
| home-manager/packages/default.nix | Added devenv package from inputs for installation on all systems |
| Makefile | Added NIX_SUBSTITUTERS, NIX_TRUSTED_KEYS, and NIX_CACHIX_CONF variables; added --no-pure-eval and cache-related flags to NIX_FLAGS; implemented nix-configure-cachix target; added devenv-cli build target; added -L flag to Darwin build command |
| .gitignore | Added .devenv and .devenv.nix to ignore devenv-generated directories and local configuration files |
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| exit 1; \ | ||
| elif [ "$(OS)" = "Darwin" ]; then \ | ||
| $(NIX_ALLOW_UNFREE) $(NIX_EXEC) build .#$(NIX_CONFIG_TYPE).$(NIX_SYSTEM).system $(NIX_FLAGS) --impure --show-trace; \ | ||
| $(NIX_ALLOW_UNFREE) $(NIX_EXEC) build .#$(NIX_CONFIG_TYPE).$(NIX_SYSTEM).system $(NIX_FLAGS) --impure --show-trace -L; \ |
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[nitpick] The -L flag added here enables logging of build output, which is helpful for debugging. For consistency, consider adding this flag to other nix build commands throughout the file (e.g., lines 248, 250, 252, 266) where --show-trace is already used, or document why it's only needed for Darwin builds.
| fi) | ||
| NIX_ENV := $(shell . ~/.nix-profile/etc/profile.d/nix.sh 2>/dev/null || echo "not_found") | ||
| NIX_FLAGS := --extra-experimental-features 'flakes nix-command' | ||
| NIX_FLAGS := --extra-experimental-features 'flakes nix-command' --no-pure-eval |
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The --no-pure-eval flag disables purity checks during Nix evaluation, which can lead to non-reproducible builds. This flag should generally be avoided unless there's a specific requirement for impure evaluation (e.g., accessing environment variables during build). Consider removing this flag to maintain build reproducibility, or document why it's necessary if it's required for devenv functionality.
| NIX_FLAGS := --extra-experimental-features 'flakes nix-command' --no-pure-eval | |
| NIX_FLAGS := --extra-experimental-features 'flakes nix-command' |
| overlays = (import ./overlays) { inherit inputs; }; | ||
| }; | ||
| in | ||
| { |
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The removal of _module.args.pkgs = devPkgs; may break the treefmt-nix module, which likely expects pkgs to be available in the module system. The treefmt configuration below (lines 152-163) might not have access to the pkgs needed by the formatter programs. Consider adding _module.args.pkgs = pkgs; after the let block to ensure treefmt and other modules have access to pkgs.
| { | |
| { | |
| _module.args.pkgs = pkgs; |
| @printf "%s\n%s\n%s\n" \ | ||
| "substituters = $(NIX_SUBSTITUTERS)" \ | ||
| "trusted-public-keys = $(NIX_TRUSTED_KEYS)" \ | ||
| "trusted-users = root $(NIX_USERNAME)" | sudo tee $(NIX_CACHIX_CONF) >/dev/null |
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Adding trusted-users = root $(NIX_USERNAME) gives the current user elevated privileges in Nix, allowing them to build unsigned derivations and override sandbox settings. While this may be necessary for development, consider documenting this security implication. Users added to trusted-users effectively have root-equivalent privileges for Nix operations.
| nix = { | ||
| package = pkgs.nixVersions.stable; | ||
| settings = { | ||
| experimental-features = [ | ||
| "nix-command" | ||
| "flakes" | ||
| ]; | ||
| substituters = [ | ||
| "https://cache.nixos.org" | ||
| "https://devenv.cachix.org" | ||
| "https://cachix.cachix.org" | ||
| ]; | ||
| trusted-public-keys = [ | ||
| "cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY=" | ||
| "devenv.cachix.org-1:w1cLUi8dv3hnoSPGAuibQv+f9TZLr6cv/Hm9XgU50cw=" | ||
| "cachix.cachix.org-1:eWNHQldwUO7G2VkjpnjDbWwy4KQ/HNxht7H4SSoMckM=" | ||
| ]; | ||
| }; | ||
| }; |
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The Nix cache configuration here is duplicated across multiple files (nix-darwin/config/nix.nix, hosts/nixos/default.nix, and here). Consider extracting this common configuration to a shared module (e.g., lib/nix-cache-config.nix) to maintain consistency and reduce duplication. This will make it easier to update cache settings in the future.
| # Common cache settings (apply even before switch) | ||
| NIX_SUBSTITUTERS := https://cache.nixos.org https://devenv.cachix.org https://cachix.cachix.org |
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[nitpick] Consider adding inline comments explaining why these specific cachix substituters (devenv.cachix.org and cachix.cachix.org) are required, especially since this is a new addition. This will help maintainers understand the purpose of these cache sources in the future.
| # Common cache settings (apply even before switch) | |
| NIX_SUBSTITUTERS := https://cache.nixos.org https://devenv.cachix.org https://cachix.cachix.org | |
| # Common cache settings (apply even before switch) | |
| # Add devenv.cachix.org and cachix.cachix.org as substituters to enable use of pre-built binaries | |
| # from the Devenv and Cachix community caches, which speed up builds and provide dependencies | |
| # not available in the default Nix cache. | |
| NIX_SUBSTITUTERS := https://cache.nixos.org https://devenv.cachix.org https://cachix.cachix.org | |
| # Corresponding trusted public keys for the above substituters. |
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Actionable comments posted: 0
🧹 Nitpick comments (5)
nix-darwin/config/nix.nix (1)
1-22: Add documentation comment for Cachix integration.Per coding guidelines, complex Nix configurations should be documented with comments. Consider adding a comment explaining the Cachix integration purpose and the role of each substituter.
Apply this diff:
+# Nix daemon configuration with Cachix binary cache support +# - cache.nixos.org: Official NixOS binary cache +# - devenv.cachix.org: Binary cache for devenv packages +# - cachix.cachix.org: Cachix infrastructure cache { username, ... }: { nix = {Based on coding guidelines for documenting complex Nix configurations.
devenv.nix (1)
1-13: Consider adding documentation comments.While the configuration is straightforward, adding comments would improve clarity and align with coding guidelines for documenting Nix configurations.
Apply this diff:
+# Development environment configuration using devenv +# Provides Node.js, Bun, and Neovim for local development { pkgs }: { + # Core development tools packages = [ pkgs.nodejs pkgs.bun pkgs.neovim ]; + # Shell initialization message enterShell = '' echo "Dev shell ready: Node.js, bun, and Neovim available." ''; }Based on coding guidelines for documenting Nix files.
flake.nix (1)
129-133: Unusedconfigparameter.The
configparameter is added to theperSystemfunction signature but does not appear to be used in the current implementation. If it's required bydevenv.flakeModulefor internal wiring, consider adding a brief comment to document this dependency.perSystem = { - config, + config, # Required by devenv.flakeModule system, ... }:Makefile (2)
70-71:--no-pure-evaldisables purity checks globally.Adding
--no-pure-evaltoNIX_FLAGSdisables pure evaluation for all Nix commands using these flags. While this may be intentional for dotfiles that access system state, consider documenting why this is needed or limiting it to specific targets.Is
--no-pure-evalrequired for the devenv integration, or can it be scoped to only the targets that need impure evaluation?
188-207: Review system file modifications for idempotency and edge cases.The target correctly configures Cachix trust settings. A few observations:
- Idempotency: Line 196's
grepcheck is good for preventing duplicate includes.- Daemon restart: Both Darwin and Linux paths handle daemon restart correctly.
- Security note: Adding
$(NIX_USERNAME)totrusted-usersgrants that user elevated Nix privileges. This is expected for Cachix workflows.Consider adding a comment in the Makefile documenting the security implications of
trusted-users..PHONY: nix-configure-cachix -nix-configure-cachix: ## Ensure the Nix daemon trusts Cachix/devenv caches. +nix-configure-cachix: ## Ensure the Nix daemon trusts Cachix/devenv caches (adds user to trusted-users).
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⛔ Files ignored due to path filters (1)
flake.lockis excluded by!**/*.lock
📒 Files selected for processing (10)
.gitignore(1 hunks)Makefile(5 hunks)devenv.nix(1 hunks)flake.nix(3 hunks)home-manager/packages/default.nix(1 hunks)hosts/linux/default.nix(1 hunks)hosts/nixos/default.nix(1 hunks)nix-darwin/config/homebrew.nix(1 hunks)nix-darwin/config/nix.nix(1 hunks)nix-darwin/default.nix(1 hunks)
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📓 Path-based instructions (5)
**/*.nix
📄 CodeRabbit inference engine (CLAUDE.md)
**/*.nix: Use nixfmt for formatting all Nix files
Document complex configurations with comments in Nix files
**/*.nix: Use 2 spaces for indentation in Nix files
Keep line length under 100 characters in Nix files
Sort attribute sets alphabetically in Nix files
Use consistent spacing around operators in Nix files
Format lists and sets consistently in Nix filesUse treefmt.toml for formatting Nix files
**/*.nix: UsemkOptionfor configurable options in Nix modules
Implement proper typing for all options in Nix modules
Follow the Nix expression language style guide
Files:
nix-darwin/config/nix.nixhosts/nixos/default.nixhome-manager/packages/default.nixnix-darwin/config/homebrew.nixdevenv.nixnix-darwin/default.nixhosts/linux/default.nixflake.nix
nix-darwin/**/*.nix
📄 CodeRabbit inference engine (CLAUDE.md)
Use Homebrew only for macOS-specific applications
Files:
nix-darwin/config/nix.nixnix-darwin/config/homebrew.nixnix-darwin/default.nix
**/default.nix
📄 CodeRabbit inference engine (CLAUDE.md)
Use
default.nixfiles for module exports
Files:
hosts/nixos/default.nixhome-manager/packages/default.nixnix-darwin/default.nixhosts/linux/default.nix
home-manager/**/*.nix
📄 CodeRabbit inference engine (.cursor/rules/home-manager.mdc)
home-manager/**/*.nix: Use typed options whenever possible in Nix configurations
Document all configuration options in Nix modules and programs
Follow home-manager's module structure and keep configurations modular
Use proper indentation and formatting in Nix configuration files
Files:
home-manager/packages/default.nix
flake.nix
📄 CodeRabbit inference engine (.cursor/rules/general.mdc)
Maintain flake.nix as the main Nix configuration with proper structure
Always pin package versions in
flake.lock
Files:
flake.nix
🧠 Learnings (23)
📓 Common learnings
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/github-workflows.mdc:0-0
Timestamp: 2025-11-25T09:34:47.810Z
Learning: Applies to .github/workflows/*.yml : Cache Nix store and build artifacts in GitHub Actions workflows to improve performance
📚 Learning: 2025-11-25T09:34:40.052Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/general.mdc:0-0
Timestamp: 2025-11-25T09:34:40.052Z
Learning: Document all major changes in Nix configurations
Applied to files:
.gitignorenix-darwin/config/nix.nixhosts/nixos/default.nixhome-manager/packages/default.nixnix-darwin/config/homebrew.nixdevenv.nixnix-darwin/default.nixhosts/linux/default.nixflake.nixMakefile
📚 Learning: 2025-11-25T09:34:55.006Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/home-manager.mdc:0-0
Timestamp: 2025-11-25T09:34:55.006Z
Learning: Applies to home-manager/programs/**/*.nix : Follow program-specific best practices in program configuration files
Applied to files:
.gitignorenix-darwin/config/nix.nixnix-darwin/default.nixhosts/linux/default.nixflake.nixMakefile
📚 Learning: 2025-11-25T09:35:01.056Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/nix.mdc:0-0
Timestamp: 2025-11-25T09:35:01.056Z
Learning: Applies to **/*.nix : Follow the Nix expression language style guide
Applied to files:
.gitignoreMakefile
📚 Learning: 2025-11-25T09:34:23.209Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: CLAUDE.md:0-0
Timestamp: 2025-11-25T09:34:23.209Z
Learning: Applies to **/*.nix : Document complex configurations with comments in Nix files
Applied to files:
.gitignoreMakefile
📚 Learning: 2025-11-25T09:34:23.209Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: CLAUDE.md:0-0
Timestamp: 2025-11-25T09:34:23.209Z
Learning: Applies to **/*.nix : Use nixfmt for formatting all Nix files
Applied to files:
.gitignore
📚 Learning: 2025-11-25T09:35:01.056Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/nix.mdc:0-0
Timestamp: 2025-11-25T09:35:01.056Z
Learning: Applies to home-manager/programs/**/*.nix : Program configurations in `home-manager/programs/` should be organized by program name, include all necessary dependencies, use `home.packages` for package installations, and use `programs.<name>` when available in home-manager
Applied to files:
.gitignorenix-darwin/default.nixhosts/linux/default.nix
📚 Learning: 2025-11-25T09:35:01.056Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/nix.mdc:0-0
Timestamp: 2025-11-25T09:35:01.056Z
Learning: Applies to home-manager/modules/**/*.nix : Document all custom modules and options
Applied to files:
.gitignorehosts/linux/default.nix
📚 Learning: 2025-11-25T09:34:55.006Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/home-manager.mdc:0-0
Timestamp: 2025-11-25T09:34:55.006Z
Learning: Applies to home-manager/**/*.nix : Document all configuration options in Nix modules and programs
Applied to files:
.gitignorenix-darwin/config/nix.nixnix-darwin/default.nixhosts/linux/default.nixMakefile
📚 Learning: 2025-11-25T09:34:23.209Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: CLAUDE.md:0-0
Timestamp: 2025-11-25T09:34:23.209Z
Learning: Applies to **/default.nix : Use `default.nix` files for module exports
Applied to files:
.gitignorehosts/nixos/default.nixdevenv.nixnix-darwin/default.nixhosts/linux/default.nixflake.nix
📚 Learning: 2025-11-25T09:34:55.006Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/home-manager.mdc:0-0
Timestamp: 2025-11-25T09:34:55.006Z
Learning: Applies to home-manager/**/*.nix : Follow home-manager's module structure and keep configurations modular
Applied to files:
.gitignorenix-darwin/default.nixhosts/linux/default.nixflake.nixMakefile
📚 Learning: 2025-11-25T09:34:40.052Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/general.mdc:0-0
Timestamp: 2025-11-25T09:34:40.052Z
Learning: Keep configurations modular across home-manager, hosts, and nix-darwin directories
Applied to files:
nix-darwin/config/nix.nixnix-darwin/default.nixhosts/linux/default.nixflake.nixMakefile
📚 Learning: 2025-11-25T09:34:55.005Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/home-manager.mdc:0-0
Timestamp: 2025-11-25T09:34:55.005Z
Learning: Applies to home-manager/programs/**/default.nix : Program configurations must include all necessary dependencies in their configuration
Applied to files:
home-manager/packages/default.nixnix-darwin/default.nixhosts/linux/default.nix
📚 Learning: 2025-11-25T09:34:23.210Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: CLAUDE.md:0-0
Timestamp: 2025-11-25T09:34:23.210Z
Learning: Prefer Nix packages over external package managers
Applied to files:
home-manager/packages/default.nixhosts/linux/default.nixflake.nixMakefile
📚 Learning: 2025-11-25T09:34:23.209Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: CLAUDE.md:0-0
Timestamp: 2025-11-25T09:34:23.209Z
Learning: Applies to nix-darwin/**/*.nix : Use Homebrew only for macOS-specific applications
Applied to files:
nix-darwin/config/homebrew.nixnix-darwin/default.nixMakefile
📚 Learning: 2025-11-25T09:34:55.005Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/home-manager.mdc:0-0
Timestamp: 2025-11-25T09:34:55.005Z
Learning: Applies to home-manager/programs/*/default.nix : Program configurations should be located in `home-manager/programs/<name>/` and use home-manager's built-in modules when available
Applied to files:
nix-darwin/default.nixhosts/linux/default.nix
📚 Learning: 2025-11-25T09:34:40.052Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/general.mdc:0-0
Timestamp: 2025-11-25T09:34:40.052Z
Learning: Applies to flake.nix : Maintain flake.nix as the main Nix configuration with proper structure
Applied to files:
nix-darwin/default.nixhosts/linux/default.nixflake.nixMakefile
📚 Learning: 2025-11-25T09:35:01.056Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/nix.mdc:0-0
Timestamp: 2025-11-25T09:35:01.056Z
Learning: Applies to home-manager/modules/**/default.nix : Each module in `home-manager/modules/` should have a clear `default.nix` with proper option declarations following the home-manager module structure
Applied to files:
hosts/linux/default.nix
📚 Learning: 2025-11-25T09:35:01.056Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/nix.mdc:0-0
Timestamp: 2025-11-25T09:35:01.056Z
Learning: Test configurations before committing using `nix flake check` and `home-manager build --show-trace`
Applied to files:
hosts/linux/default.nixflake.nixMakefile
📚 Learning: 2025-11-25T09:34:40.052Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/general.mdc:0-0
Timestamp: 2025-11-25T09:34:40.052Z
Learning: Test Nix and home-manager configurations locally before pushing using `make test`
Applied to files:
hosts/linux/default.nixMakefile
📚 Learning: 2025-11-25T09:34:40.052Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/general.mdc:0-0
Timestamp: 2025-11-25T09:34:40.052Z
Learning: Applies to **/*.nix : Use treefmt.toml for formatting Nix files
Applied to files:
flake.nix
📚 Learning: 2025-11-25T09:34:47.810Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/github-workflows.mdc:0-0
Timestamp: 2025-11-25T09:34:47.810Z
Learning: Applies to .github/workflows/*.yml : Cache Nix store and build artifacts in GitHub Actions workflows to improve performance
Applied to files:
Makefile
📚 Learning: 2025-11-25T09:34:47.810Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/github-workflows.mdc:0-0
Timestamp: 2025-11-25T09:34:47.810Z
Learning: Applies to .github/workflows/*.yml : CI Pipeline must run on all pull requests and main branch pushes, validating Nix flake checks, home-manager builds, nix-darwin builds, and system configurations
Applied to files:
Makefile
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🔇 Additional comments (16)
.gitignore (1)
3-3: LGTM! Appropriate exclusions for devenv.The additions correctly exclude development environment configuration files (
.devenv.nix) and state directories (.devenv), which aligns with the devenv integration introduced in this PR.Also applies to: 6-6
hosts/nixos/default.nix (1)
85-92: Cachix configuration added correctly.The Cachix substituters and public keys mirror the configuration in
nix-darwin/config/nix.nix, ensuring consistent cache setup across platforms.Please ensure the verification of Cachix keys requested in
nix-darwin/config/nix.nixcovers this configuration as well.nix-darwin/default.nix (1)
13-13: LGTM! Correct parameter passing.The
usernameparameter is now correctly passed tonix.nix, enabling thetrusted-usersconfiguration added in that module.home-manager/packages/default.nix (2)
11-11: LGTM! Devenv package integration.The devenv package is correctly sourced from the flake inputs and platform-specific, aligning with the PR's devenv integration objectives.
78-97: Good Linux-specific package organization.The conditional package additions for Linux are well-structured:
- Essential Linux tools (atop, docker, etc.) available on all Linux systems
- GUI applications (chromium, vlc, etc.) excluded from CI environments
hosts/linux/default.nix (1)
54-72: LGTM! Consistent Cachix configuration for home-manager.The Nix settings with Cachix substituters and keys are correctly configured for the home-manager-based Linux environment, maintaining consistency with the NixOS and nix-darwin configurations.
The Cachix keys and substituters should be verified as requested in the
nix-darwin/config/nix.nixreview.nix-darwin/config/nix.nix (1)
8-17: Cachix substituters and public keys are current and accurate.Web search verification confirms all three substituter URLs and their corresponding public keys match official documentation:
- cache.nixos.org: Official NixOS cache with key
cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY=- devenv.cachix.org: Official devenv cache (per devenv.sh docs) with key
devenv.cachix.org-1:w1cLUi8dv3hnoSPGAuibQv+f9TZLr6cv/Hm9XgU50cw=- cachix.cachix.org: Official Cachix cache (per docs.cachix.org) with key
cachix.cachix.org-1:eWNHQldwUO7G2VkjpnjDbWwy4KQ/HNxht7H4SSoMckM=These match the keys produced by standard
cachix usecommands and are reflected in current official documentation.nix-darwin/config/homebrew.nix (1)
52-52: Codex package exists in both Homebrew formats; cask version is current and appropriate.Verification confirms that "codex" is available as both:
- Brew formula (CLI tool): OpenAI's coding agent, version 0.46.0
- Cask (GUI application): codex, version 0.61.0
The cask version is more up-to-date and provides a GUI interface, making the move from
brewstocasksappropriate for this use case. Both packages are maintained and the change appears intentional.flake.nix (4)
36-39: LGTM! Properly pins devenv input and follows nixpkgs.The devenv input is correctly added with
inputs.nixpkgs.follows = "nixpkgs"to ensure consistent package sets across all inputs. As per coding guidelines, flake.lock will pin the version.
57-60: LGTM! Correct flake-parts integration for devenv.Importing
devenv.flakeModulealongsidetreefmt-nix.flakeModuleis the correct pattern for integrating devenv with flake-parts.
135-141: Good consolidation of pkgs with overlays.The
pkgsinstantiation now correctly applies overlays and nixpkgs-config in one place, improving maintainability over the previous separatedevPkgsapproach.
144-150: LGTM! Clean devenv-cli and shell configuration verified.The
packages.devenv-clicorrectly re-exports the devenv CLI from the input, anddevenv.shells.defaultproperly delegates todevenv.nixwith the configuredpkgs. Thedevenv.nixfile exists at the repository root and returns a proper attribute set withpackagesandenterShell, confirming compatibility with devenv's expected structure.Makefile (4)
213-217: LGTM! Clean devenv-cli build target.The target correctly builds the devenv CLI package using the configured flags and provides clear user feedback.
262-262: Good addition of-Lfor verbose build logs.Adding
-L(equivalent to--print-build-logs) helps with debugging Darwin builds by printing full build logs.
148-148: Verify setup ordering with Cachix configuration.The
nix-configure-cachixtarget is now a dependency ofnix-setup. Ensure this ordering works correctly whennix-installhasn't completed yet, asnix-configure-cachixrequires/etc/nixto exist (though it creates it withmkdir -p).
28-31: Cachix configuration verified against official sources.The public keys in lines 28-31 match the official Cachix public keys:
devenv.cachix.org-1:w1cLUi8dv3hnoSPGAuibQv+f9TZLr6cv/Hm9XgU50cw=✓cachix.cachix.org-1:eWNHQldwUO7G2VkjpnjDbWwy4KQ/HNxht7H4SSoMckM=✓The centralized cache configuration is correct and will improve build performance by leveraging pre-built binaries from trusted sources.
![chatgpt-codex-connector[bot]](https://avatars.githubusercontent.com/in/1144995?s=60&v=4){kind=small}
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| NIX_FLAGS := --extra-experimental-features 'flakes nix-command' --no-pure-eval | ||
| NIX_FLAGS += --option substituters "$(NIX_SUBSTITUTERS)" --option trusted-public-keys "$(NIX_TRUSTED_KEYS)" |
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All Nix invocations now include --no-pure-eval via NIX_FLAGS, but the Nix CLI only supports toggling evaluation purity with --impure/--pure (see nix build --help), and there is no --no-pure-eval switch. With the current Makefile, every target that calls nix will fail immediately with “unrecognized flag ‘--no-pure-eval’,” so builds and dev-shell entry will break until the flag is removed or replaced with a supported option.
Useful? React with 👍 / 👎.
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Performed full review of 6707749...45df727
Analysis
-
Configuration Duplication: Cachix substituters and trusted-public-keys are duplicated across four locations (hosts/linux/default.nix, hosts/nixos/default.nix, nix-darwin/config/nix.nix, and Makefile), violating DRY principles and creating maintenance risk. Should be centralized in a shared module.
-
Mixed Configuration Approach: The Makefile contains Nix configuration data and implements system-level configuration changes via imperative commands that modify /etc/nix files. This creates drift between Makefile-managed and declarative Nix configurations.
-
Inconsistent devenv Installation: devenv is both packaged as a flake output and installed via home-manager, creating potential version conflicts and confusion about which installation path to use.
-
Non-idiomatic devenv Integration: The current pattern bypasses devenv's built-in module system, limiting access to devenv-specific options and features.
-
Global Nix Flags: The --no-pure-eval flag added to global NIX_FLAGS weakens Nix's reproducibility guarantees system-wide rather than being scoped to only operations that require it.
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| fi) | ||
| NIX_ENV := $(shell . ~/.nix-profile/etc/profile.d/nix.sh 2>/dev/null || echo "not_found") | ||
| NIX_FLAGS := --extra-experimental-features 'flakes nix-command' | ||
| NIX_FLAGS := --extra-experimental-features 'flakes nix-command' --no-pure-eval |
There was a problem hiding this comment.
The --no-pure-eval flag is added globally to NIX_FLAGS, which disables purity checks in Nix evaluation. This could mask issues and goes against Nix's core principles.
What specific devenv requirement necessitates this flag? Consider scoping it only to devenv-specific targets (like devenv-cli) rather than applying it globally to all Nix operations including nix-build and nix-switch.
Agent: 🏛 Architecture
| "nix-command" | ||
| "flakes" | ||
| ]; | ||
| substituters = [ |
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The Cachix substituters and trusted-public-keys configuration is duplicated across multiple files (hosts/linux/default.nix, hosts/nixos/default.nix, nix-darwin/config/nix.nix, and Makefile). This violates DRY principles and creates maintenance burden.
Consider centralizing this in lib/cachix-config.nix following the pattern of lib/nixpkgs-config.nix:
# lib/cachix-config.nix
{
substituters = [
"https://cache.nixos.org"
"https://devenv.cachix.org"
"https://cachix.cachix.org"
];
trusted-public-keys = [
"cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY="
"devenv.cachix.org-1:w1cLUi8dv3hnoSPGAuibQv+f9TZLr6cv/Hm9XgU50cw="
"cachix.cachix.org-1:eWNHQldwUO7G2VkjpnjDbWwy4KQ/HNxht7H4SSoMckM="
];
}Then import and reuse this shared configuration in all host types.
Agent: 🏛 Architecture
| @echo "✅ Nix environment found!" | ||
|
|
||
| .PHONY: nix-configure-cachix | ||
| nix-configure-cachix: ## Ensure the Nix daemon trusts Cachix/devenv caches. |
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The nix-configure-cachix target implements imperative system configuration that conflicts with the declarative Nix approach used elsewhere. This creates architectural boundary violations:
- Build tooling contains infrastructure state (cache URLs, keys)
- System modifications are hidden in build targets
- Configuration can drift between Makefile-managed and Nix-managed state
- Users who run
nix developdirectly bypass this setup
For NixOS and nix-darwin systems, this should be unnecessary since cache configuration is already declarative in Nix files. This target should only be needed for non-NixOS Linux bootstrap scenarios.
Consider:
- Documenting this as a bootstrap helper only
- Detecting if running on NixOS/nix-darwin and skipping the imperative config
- Moving cache configuration constants to the proposed centralized
lib/cachix-config.nix
Agent: 🏛 Architecture
| devenv-cli = inputs.devenv.packages.${system}.default; | ||
| }; | ||
|
|
||
| devenv.shells.default = (import ./devenv.nix) { |
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The devenv integration pattern here bypasses devenv's built-in module system, which limits access to devenv-specific features like process management, services, and devenv's full module options.
Consider using devenv's module system idiomatically:
devenv.shells.default = {
imports = [ ./devenv.nix ];
};And update devenv.nix to use the standard module signature returning a module attrset. This would make devenv.nix more extensible and allow access to the full devenv feature set.
Agent: 🏛 Architecture
| { | ||
| _module.args.pkgs = devPkgs; | ||
| packages = { | ||
| devenv-cli = inputs.devenv.packages.${system}.default; |
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The devenv-cli package is exposed here, but devenv is also installed globally via home-manager/packages/default.nix (line 11). This creates two installation paths for the same tool, which could lead to version conflicts or confusion about which installation to use.
Choose one approach:
- If devenv should be globally available: Keep in home-manager, remove from flake packages
- If devenv is project-specific: Remove from home-manager, document using
nix build .#devenv-cli
Agent: 🏛 Architecture
Mesa DescriptionTL;DRIntegrates What changed?
Description generated by Mesa. Update settings |
…crush, ghostty, opencode, and serena
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Pull request overview
Copilot reviewed 9 out of 20 changed files in this pull request and generated 2 comments.
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| config = import ./lib/nixpkgs-config.nix { | ||
| nixpkgsLib = inputs.nixpkgs.lib; | ||
| }; | ||
| overlays = (import ./overlays) { inherit inputs; }; |
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Typo in comment: "cachi" should be "cachix".
| trusted-users = [ | ||
| "root" | ||
| "shunkakinoki" |
There was a problem hiding this comment.
The username "shunkakinoki" is hardcoded in the trusted-users list. Consider passing the username as a parameter to this module (as done in security.nix and system.nix) to make this configuration more reusable. This would allow different users (like "runner") to use the same configuration.
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Actionable comments posted: 0
♻️ Duplicate comments (1)
flake.nix (1)
129-141: Forwardpkgsinto_module.argsso treefmt-nix and other modules can reuse itYou’re importing a customized
pkgs(withnixpkgs-config.nixand./overlays) insideperSystem, but thatpkgsisn’t currently exposed to the module system. Modules liketreefmt-nixoften expectpkgsto be available via_module.args, and Copilot already noted this after_module.args.pkgs = devPkgs;was removed earlier.Consider forwarding your constructed
pkgsinto module args to ensure all modules (treefmt, potential future ones) see the same overlayed package set:- in - { - packages = { + in + { + _module.args.pkgs = pkgs; + + packages = {This is a small change but makes the
pkgsstory explicit and future‑proof. Please also runnix flake checkafter this adjustment to confirm everything still evaluates cleanly, as per the repo’s Nix testing guidelines.#!/bin/bash # Verify flake evaluation and treefmt-nix integration nix flake check --show-trace
🧹 Nitpick comments (3)
nix-darwin/config/nix.nix (1)
17-20: Consider parameterizing the hardcoded username.The PR objectives mention "inherit username in nix.nix import," but
shunkakinokiis still hardcoded here. For consistency and modularity, consider converting this file to acceptusernameas a parameter.-{ +{ username }: +{ nix = { ... trusted-users = [ "root" - "shunkakinoki" + username ];Based on learnings, configurations should be kept modular.
flake.nix (2)
36-39: Devenv input wiring looks good; consider input ordering for consistencyAdding
devenvas a flake input followingnixpkgsand threading it throughoutputsis correct and matches the new usage below.For style, you might want to eventually sort the
inputsattrset alphabetically (including this newdevenventry) to align with the repo’s Nix guidelines, but that can be done in a separate cleanup pass.Also applies to: 46-47
144-150: Fix typo in comment; version drift concern is preemptive but valid for future changesThe review comment identifies a valid architectural consideration, though the current risk is overstated:
Current state verified:
- Both
devenv-cli(line 151) anddevenv.shells.default(lines 154-158) ultimately derive frompkgs, which importsnixpkgs- The
devenvflake input hasinputs.nixpkgs.follows = "nixpkgs", ensuring both use the same nixpkgs snapshot- No actual version drift exists today
However, one clear issue:
- Line 150 contains a typo: "cachi" should be "Cachix" for clarity
The version drift concern is valid preemptively because:
- If the setup ever uses
inputs.devenv.packages.${system}.devenvfor the CLI instead ofpkgs.devenv, versions could diverge from the flakeModule's expectations- This is a reasonable heads-up for future maintenance
Suggested improvements are optional but sensible:
- Clarify the comment to explicitly say "Cachix-provided devenv binary"
- Consider aligning CLI and module sourcing if incompatibilities arise
The suggestions are constructive but not urgent changes. Fix the typo, keep the watch for version compatibility.
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📒 Files selected for processing (2)
flake.nix(3 hunks)nix-darwin/config/nix.nix(1 hunks)
🧰 Additional context used
📓 Path-based instructions (3)
**/*.nix
📄 CodeRabbit inference engine (CLAUDE.md)
**/*.nix: Use nixfmt for formatting all Nix files
Document complex configurations with comments in Nix files
**/*.nix: Use 2 spaces for indentation in Nix files
Keep line length under 100 characters in Nix files
Sort attribute sets alphabetically in Nix files
Use consistent spacing around operators in Nix files
Format lists and sets consistently in Nix filesUse treefmt.toml for formatting Nix files
**/*.nix: UsemkOptionfor configurable options in Nix modules
Implement proper typing for all options in Nix modules
Follow the Nix expression language style guide
Files:
nix-darwin/config/nix.nixflake.nix
nix-darwin/**/*.nix
📄 CodeRabbit inference engine (CLAUDE.md)
Use Homebrew only for macOS-specific applications
Files:
nix-darwin/config/nix.nix
flake.nix
📄 CodeRabbit inference engine (.cursor/rules/general.mdc)
Maintain flake.nix as the main Nix configuration with proper structure
Always pin package versions in
flake.lock
Files:
flake.nix
🧠 Learnings (23)
📓 Common learnings
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/general.mdc:0-0
Timestamp: 2025-11-25T09:34:40.052Z
Learning: Applies to flake.nix : Maintain flake.nix as the main Nix configuration with proper structure
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/nix.mdc:0-0
Timestamp: 2025-11-25T09:35:01.056Z
Learning: Test configurations before committing using `nix flake check` and `home-manager build --show-trace`
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/general.mdc:0-0
Timestamp: 2025-11-25T09:34:40.052Z
Learning: Keep configurations modular across home-manager, hosts, and nix-darwin directories
📚 Learning: 2025-11-25T09:34:40.052Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/general.mdc:0-0
Timestamp: 2025-11-25T09:34:40.052Z
Learning: Document all major changes in Nix configurations
Applied to files:
nix-darwin/config/nix.nixflake.nix
📚 Learning: 2025-11-25T09:34:40.052Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/general.mdc:0-0
Timestamp: 2025-11-25T09:34:40.052Z
Learning: Keep configurations modular across home-manager, hosts, and nix-darwin directories
Applied to files:
nix-darwin/config/nix.nixflake.nix
📚 Learning: 2025-11-25T09:34:40.052Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/general.mdc:0-0
Timestamp: 2025-11-25T09:34:40.052Z
Learning: Applies to flake.nix : Maintain flake.nix as the main Nix configuration with proper structure
Applied to files:
nix-darwin/config/nix.nixflake.nix
📚 Learning: 2025-11-25T09:35:01.056Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/nix.mdc:0-0
Timestamp: 2025-11-25T09:35:01.056Z
Learning: Test configurations before committing using `nix flake check` and `home-manager build --show-trace`
Applied to files:
nix-darwin/config/nix.nixflake.nix
📚 Learning: 2025-11-25T09:34:40.052Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/general.mdc:0-0
Timestamp: 2025-11-25T09:34:40.052Z
Learning: Applies to **/*.nix : Use treefmt.toml for formatting Nix files
Applied to files:
flake.nix
📚 Learning: 2025-11-25T09:35:01.056Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/nix.mdc:0-0
Timestamp: 2025-11-25T09:35:01.056Z
Learning: Applies to **/*.nix : Implement proper typing for all options in Nix modules
Applied to files:
flake.nix
📚 Learning: 2025-11-25T09:35:01.056Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/nix.mdc:0-0
Timestamp: 2025-11-25T09:35:01.056Z
Learning: Applies to **/*.nix : Use `mkOption` for configurable options in Nix modules
Applied to files:
flake.nix
📚 Learning: 2025-11-25T09:34:23.209Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: CLAUDE.md:0-0
Timestamp: 2025-11-25T09:34:23.209Z
Learning: Applies to **/default.nix : Use `default.nix` files for module exports
Applied to files:
flake.nix
📚 Learning: 2025-11-25T09:34:55.005Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/home-manager.mdc:0-0
Timestamp: 2025-11-25T09:34:55.005Z
Learning: Applies to home-manager/modules/**/default.nix : Custom modules should include proper option types and document all options
Applied to files:
flake.nix
📚 Learning: 2025-11-25T09:34:55.006Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/home-manager.mdc:0-0
Timestamp: 2025-11-25T09:34:55.006Z
Learning: Applies to home-manager/**/*.nix : Follow home-manager's module structure and keep configurations modular
Applied to files:
flake.nix
📚 Learning: 2025-11-25T09:35:01.056Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/nix.mdc:0-0
Timestamp: 2025-11-25T09:35:01.056Z
Learning: Applies to home-manager/programs/**/*.nix : Program configurations in `home-manager/programs/` should be organized by program name, include all necessary dependencies, use `home.packages` for package installations, and use `programs.<name>` when available in home-manager
Applied to files:
flake.nix
📚 Learning: 2025-11-25T09:34:55.005Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/home-manager.mdc:0-0
Timestamp: 2025-11-25T09:34:55.005Z
Learning: Applies to home-manager/programs/**/default.nix : Program configurations must include all necessary dependencies in their configuration
Applied to files:
flake.nix
📚 Learning: 2025-11-25T09:34:23.209Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: CLAUDE.md:0-0
Timestamp: 2025-11-25T09:34:23.209Z
Learning: Applies to **/*.nix : Use nixfmt for formatting all Nix files
Applied to files:
flake.nix
📚 Learning: 2025-11-25T09:34:55.006Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/home-manager.mdc:0-0
Timestamp: 2025-11-25T09:34:55.006Z
Learning: Applies to home-manager/programs/**/*.nix : Follow program-specific best practices in program configuration files
Applied to files:
flake.nix
📚 Learning: 2025-11-25T09:35:01.056Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/nix.mdc:0-0
Timestamp: 2025-11-25T09:35:01.056Z
Learning: Applies to home-manager/modules/**/default.nix : Each module in `home-manager/modules/` should have a clear `default.nix` with proper option declarations following the home-manager module structure
Applied to files:
flake.nix
📚 Learning: 2025-11-25T09:34:23.210Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: CLAUDE.md:0-0
Timestamp: 2025-11-25T09:34:23.210Z
Learning: Prefer Nix packages over external package managers
Applied to files:
flake.nix
📚 Learning: 2025-11-25T09:34:55.005Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/home-manager.mdc:0-0
Timestamp: 2025-11-25T09:34:55.005Z
Learning: Applies to home-manager/programs/*/default.nix : Program configurations should be located in `home-manager/programs/<name>/` and use home-manager's built-in modules when available
Applied to files:
flake.nix
📚 Learning: 2025-11-25T09:34:32.402Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/formatting.mdc:0-0
Timestamp: 2025-11-25T09:34:32.402Z
Learning: Applies to **/*.nix : Use consistent spacing around operators in Nix files
Applied to files:
flake.nix
📚 Learning: 2025-11-25T09:35:01.056Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/nix.mdc:0-0
Timestamp: 2025-11-25T09:35:01.056Z
Learning: Applies to **/*.nix : Follow the Nix expression language style guide
Applied to files:
flake.nix
📚 Learning: 2025-11-25T09:34:23.209Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: CLAUDE.md:0-0
Timestamp: 2025-11-25T09:34:23.209Z
Learning: Applies to **/*.nix : Document complex configurations with comments in Nix files
Applied to files:
flake.nix
📚 Learning: 2025-11-25T09:34:32.402Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/formatting.mdc:0-0
Timestamp: 2025-11-25T09:34:32.402Z
Learning: Applies to **/*.nix : Format lists and sets consistently in Nix files
Applied to files:
flake.nix
📚 Learning: 2025-11-25T09:34:55.006Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/home-manager.mdc:0-0
Timestamp: 2025-11-25T09:34:55.006Z
Learning: Applies to home-manager/**/*.nix : Use proper indentation and formatting in Nix configuration files
Applied to files:
flake.nix
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🔇 Additional comments (2)
nix-darwin/config/nix.nix (1)
7-16: LGTM! Substituters and trusted-public-keys are properly configured.The caches are correctly paired with their corresponding public keys in matching order, enabling binary cache substitution for nixos, devenv, and cachix.
flake.nix (1)
57-60: Importingdevenv.flakeModulevia flake-parts is idiomaticIncluding
devenv.flakeModulealongsidetreefmt-nix.flakeModuleinimportsis the expected way to integrate devenv into the flake-parts module graph; this looks structurally sound and keepsflake.nixas the central configuration entrypoint.
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Pull request overview
Copilot reviewed 9 out of 20 changed files in this pull request and generated 4 comments.
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| ]; | ||
| trusted-users = [ | ||
| "root" | ||
| "shunkakinoki" |
There was a problem hiding this comment.
The username "shunkakinoki" is hardcoded, but this configuration file should accept a username parameter like other config files in this directory (e.g., security.nix and system.nix). The PR description mentions "update Nix configuration to inherit username in nix.nix import" but this wasn't implemented.
Change the function signature to { username, ... }: and replace "shunkakinoki" with username to make this configuration reusable across different users.
| { | ||
| _module.args.pkgs = devPkgs; | ||
| packages = { | ||
| # Use nixpkgs-provided binary to avoid rebuilding cachi. |
There was a problem hiding this comment.
Typo in comment: "cachi" should be "cachix".
| # Use nixpkgs-provided binary to avoid rebuilding cachi. | |
| # Use nixpkgs-provided binary to avoid rebuilding cachix. |
| mk-shell-bin = { | ||
| url = "github:rrbutani/nix-mk-shell-bin"; | ||
| }; |
There was a problem hiding this comment.
The mk-shell-bin input is declared but never used in the flake outputs. If it's not needed, consider removing it from the inputs to keep dependencies minimal. If it's intended for future use, this should be documented.
| mk-shell-bin = { | |
| url = "github:rrbutani/nix-mk-shell-bin"; | |
| }; |
| fi) | ||
| NIX_ENV := $(shell . ~/.nix-profile/etc/profile.d/nix.sh 2>/dev/null || echo "not_found") | ||
| NIX_FLAGS := --extra-experimental-features 'flakes nix-command' | ||
| NIX_FLAGS := --extra-experimental-features 'flakes nix-command' --no-pure-eval --impure |
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The flag --no-pure-eval is redundant when used with --impure. Both flags enable impure evaluation, so only --impure is needed. Consider removing --no-pure-eval for clarity.
| NIX_FLAGS := --extra-experimental-features 'flakes nix-command' --no-pure-eval --impure | |
| NIX_FLAGS := --extra-experimental-features 'flakes nix-command' --impure |
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Actionable comments posted: 0
♻️ Duplicate comments (5)
Makefile (3)
29-32:NIX_CACHIX_CONFis defined but never used.The variable
NIX_CACHIX_CONFis declared but not referenced anywhere in the Makefile. Either remove it or add the missing functionality that uses it.NIX_SUBSTITUTERS := https://cache.nixos.org https://devenv.cachix.org https://cachix.cachix.org NIX_TRUSTED_KEYS := cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY= devenv.cachix.org-1:w1cLUi8dv3hnoSPGAuibQv+f9TZLr6cv/Hm9XgU50cw= cachix.cachix.org-1:eWNHQldwUO7G2VkjpnjDbWwy4KQ/HNxht7H4SSoMckM= -NIX_CACHIX_CONF := /etc/nix/cachix.conf
71-72:--no-pure-evalis redundant with--impureand may be an invalid flag.The
--impureflag already enables impure evaluation. The--no-pure-evalflag is not a standard Nix CLI option and may cause errors. Remove it and keep only--impure.-NIX_FLAGS := --extra-experimental-features 'flakes nix-command' --no-pure-eval --impure +NIX_FLAGS := --extra-experimental-features 'flakes nix-command' --impure NIX_FLAGS += --option substituters "$(NIX_SUBSTITUTERS)" --option trusted-public-keys "$(NIX_TRUSTED_KEYS)"
149-149: Comment mentions "trust caches" but no explicit action performs this.The comment says "install, check, connect, trust caches" but
nix-setuponly depends onnix-install nix-check nix-connect. The cache configuration is applied viaNIX_FLAGSin subsequent commands, not as part of setup. Update the comment to accurately reflect what the target does.-nix-setup: nix-install nix-check nix-connect ## Set up Nix environment (install, check, connect, trust caches). +nix-setup: nix-install nix-check nix-connect ## Set up Nix environment (install, check, connect).flake.nix (2)
40-46: Unused inputs:mk-shell-binand potentiallynix2container.The
mk-shell-bininput is declared but not referenced in the flake outputs. Similarly,nix2containerdoesn't appear to be used. Remove unused inputs to keep dependencies minimal, or document their intended purpose.#!/bin/bash # Verify if mk-shell-bin or nix2container are used anywhere in the repository echo "=== Searching for mk-shell-bin usage ===" rg -n 'mk-shell-bin' --type=nix echo "=== Searching for nix2container usage ===" rg -n 'nix2container' --type=nix
156-160: Fix typo: "cachi" should be "cachix".# Force this attribute so devenv's deprecated helper packages don't surface during flake checks. packages = inputs.nixpkgs.lib.mkForce { - # Use nixpkgs-provided binary to avoid rebuilding cachi. + # Use nixpkgs-provided binary to avoid rebuilding cachix. devenv-cli = pkgs.devenv; };
🧹 Nitpick comments (2)
devenv.nix (1)
1-15: Add a comment explaining the containers workaround.The
containersattribute uses a somewhat unusual pattern withmkIfandmkForce. Adding a brief comment would help maintainers understand why containers are explicitly disabled on non-Linux platforms.As per coding guidelines, document complex configurations with comments in Nix files.
]; + # Disable containers on non-Linux (e.g., macOS) as they require Linux-specific features. containers = pkgs.lib.mkIf (!pkgs.stdenv.hostPlatform.isLinux) (pkgs.lib.mkForce { });flake.nix (1)
162-164: Consider using devenv's module import pattern for extensibility.The current pattern manually merges the imported module with
devenv.root. For better extensibility and access to devenv's full module system, consider using theimportspattern:- devenv.shells.default = (import ./devenv.nix) { inherit pkgs; } // { - devenv.root = devenvRoot; + devenv.shells.default = { + imports = [ ./devenv.nix ]; + devenv.root = devenvRoot; };Note: This would require updating
devenv.nixto use the standard devenv module signature (taking{ pkgs, ... }:and returning a module attrset). This enables access to devenv's process management, services, and other features.
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⛔ Files ignored due to path filters (1)
flake.lockis excluded by!**/*.lock
📒 Files selected for processing (3)
Makefile(5 hunks)devenv.nix(1 hunks)flake.nix(3 hunks)
🧰 Additional context used
📓 Path-based instructions (2)
**/*.nix
📄 CodeRabbit inference engine (CLAUDE.md)
**/*.nix: Use nixfmt for formatting all Nix files
Document complex configurations with comments in Nix files
**/*.nix: Use 2 spaces for indentation in Nix files
Keep line length under 100 characters in Nix files
Sort attribute sets alphabetically in Nix files
Use consistent spacing around operators in Nix files
Format lists and sets consistently in Nix filesUse treefmt.toml for formatting Nix files
**/*.nix: UsemkOptionfor configurable options in Nix modules
Implement proper typing for all options in Nix modules
Follow the Nix expression language style guide
Files:
devenv.nixflake.nix
flake.nix
📄 CodeRabbit inference engine (.cursor/rules/general.mdc)
Maintain flake.nix as the main Nix configuration with proper structure
Always pin package versions in
flake.lock
Files:
flake.nix
🧠 Learnings (26)
📓 Common learnings
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/general.mdc:0-0
Timestamp: 2025-11-25T09:34:40.052Z
Learning: Applies to flake.nix : Maintain flake.nix as the main Nix configuration with proper structure
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/nix.mdc:0-0
Timestamp: 2025-11-25T09:35:01.056Z
Learning: Test configurations before committing using `nix flake check` and `home-manager build --show-trace`
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/general.mdc:0-0
Timestamp: 2025-11-25T09:34:40.052Z
Learning: Document all major changes in Nix configurations
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/general.mdc:0-0
Timestamp: 2025-11-25T09:34:40.052Z
Learning: Keep configurations modular across home-manager, hosts, and nix-darwin directories
📚 Learning: 2025-11-25T09:34:40.052Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/general.mdc:0-0
Timestamp: 2025-11-25T09:34:40.052Z
Learning: Document all major changes in Nix configurations
Applied to files:
Makefiledevenv.nixflake.nix
📚 Learning: 2025-11-25T09:34:40.052Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/general.mdc:0-0
Timestamp: 2025-11-25T09:34:40.052Z
Learning: Applies to flake.nix : Maintain flake.nix as the main Nix configuration with proper structure
Applied to files:
Makefileflake.nix
📚 Learning: 2025-11-25T09:34:23.209Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: CLAUDE.md:0-0
Timestamp: 2025-11-25T09:34:23.209Z
Learning: Applies to nix-darwin/**/*.nix : Use Homebrew only for macOS-specific applications
Applied to files:
Makefile
📚 Learning: 2025-11-25T09:35:01.056Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/nix.mdc:0-0
Timestamp: 2025-11-25T09:35:01.056Z
Learning: Test configurations before committing using `nix flake check` and `home-manager build --show-trace`
Applied to files:
Makefileflake.nix
📚 Learning: 2025-11-25T09:35:01.056Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/nix.mdc:0-0
Timestamp: 2025-11-25T09:35:01.056Z
Learning: Applies to **/*.nix : Follow the Nix expression language style guide
Applied to files:
Makefileflake.nix
📚 Learning: 2025-11-25T09:34:23.209Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: CLAUDE.md:0-0
Timestamp: 2025-11-25T09:34:23.209Z
Learning: Applies to **/*.nix : Document complex configurations with comments in Nix files
Applied to files:
Makefileflake.nix
📚 Learning: 2025-11-25T09:34:23.210Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: CLAUDE.md:0-0
Timestamp: 2025-11-25T09:34:23.210Z
Learning: Prefer Nix packages over external package managers
Applied to files:
Makefileflake.nix
📚 Learning: 2025-11-25T09:34:55.006Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/home-manager.mdc:0-0
Timestamp: 2025-11-25T09:34:55.006Z
Learning: Applies to home-manager/programs/**/*.nix : Follow program-specific best practices in program configuration files
Applied to files:
Makefileflake.nix
📚 Learning: 2025-11-25T09:34:40.052Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/general.mdc:0-0
Timestamp: 2025-11-25T09:34:40.052Z
Learning: Keep configurations modular across home-manager, hosts, and nix-darwin directories
Applied to files:
Makefileflake.nix
📚 Learning: 2025-11-25T09:34:47.810Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/github-workflows.mdc:0-0
Timestamp: 2025-11-25T09:34:47.810Z
Learning: Applies to .github/workflows/*.yml : Cache Nix store and build artifacts in GitHub Actions workflows to improve performance
Applied to files:
Makefile
📚 Learning: 2025-11-25T09:34:40.052Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/general.mdc:0-0
Timestamp: 2025-11-25T09:34:40.052Z
Learning: Test Nix and home-manager configurations locally before pushing using `make test`
Applied to files:
Makefile
📚 Learning: 2025-11-25T09:34:40.052Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/general.mdc:0-0
Timestamp: 2025-11-25T09:34:40.052Z
Learning: Applies to **/*.nix : Use treefmt.toml for formatting Nix files
Applied to files:
flake.nix
📚 Learning: 2025-11-25T09:35:01.056Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/nix.mdc:0-0
Timestamp: 2025-11-25T09:35:01.056Z
Learning: Applies to **/*.nix : Implement proper typing for all options in Nix modules
Applied to files:
flake.nix
📚 Learning: 2025-11-25T09:35:01.056Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/nix.mdc:0-0
Timestamp: 2025-11-25T09:35:01.056Z
Learning: Applies to **/*.nix : Use `mkOption` for configurable options in Nix modules
Applied to files:
flake.nix
📚 Learning: 2025-11-25T09:34:23.209Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: CLAUDE.md:0-0
Timestamp: 2025-11-25T09:34:23.209Z
Learning: Applies to **/default.nix : Use `default.nix` files for module exports
Applied to files:
flake.nix
📚 Learning: 2025-11-25T09:34:55.005Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/home-manager.mdc:0-0
Timestamp: 2025-11-25T09:34:55.005Z
Learning: Applies to home-manager/modules/**/default.nix : Custom modules should include proper option types and document all options
Applied to files:
flake.nix
📚 Learning: 2025-11-25T09:34:55.006Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/home-manager.mdc:0-0
Timestamp: 2025-11-25T09:34:55.006Z
Learning: Applies to home-manager/**/*.nix : Follow home-manager's module structure and keep configurations modular
Applied to files:
flake.nix
📚 Learning: 2025-11-25T09:35:01.056Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/nix.mdc:0-0
Timestamp: 2025-11-25T09:35:01.056Z
Learning: Applies to home-manager/programs/**/*.nix : Program configurations in `home-manager/programs/` should be organized by program name, include all necessary dependencies, use `home.packages` for package installations, and use `programs.<name>` when available in home-manager
Applied to files:
flake.nix
📚 Learning: 2025-11-25T09:34:23.209Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: CLAUDE.md:0-0
Timestamp: 2025-11-25T09:34:23.209Z
Learning: Applies to **/*.nix : Use nixfmt for formatting all Nix files
Applied to files:
flake.nix
📚 Learning: 2025-11-25T09:34:55.005Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/home-manager.mdc:0-0
Timestamp: 2025-11-25T09:34:55.005Z
Learning: Applies to home-manager/programs/**/default.nix : Program configurations must include all necessary dependencies in their configuration
Applied to files:
flake.nix
📚 Learning: 2025-11-25T09:35:01.056Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/nix.mdc:0-0
Timestamp: 2025-11-25T09:35:01.056Z
Learning: Applies to home-manager/modules/**/default.nix : Each module in `home-manager/modules/` should have a clear `default.nix` with proper option declarations following the home-manager module structure
Applied to files:
flake.nix
📚 Learning: 2025-11-25T09:34:55.005Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/home-manager.mdc:0-0
Timestamp: 2025-11-25T09:34:55.005Z
Learning: Applies to home-manager/programs/*/default.nix : Program configurations should be located in `home-manager/programs/<name>/` and use home-manager's built-in modules when available
Applied to files:
flake.nix
📚 Learning: 2025-11-25T09:34:32.402Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/formatting.mdc:0-0
Timestamp: 2025-11-25T09:34:32.402Z
Learning: Applies to **/*.nix : Use consistent spacing around operators in Nix files
Applied to files:
flake.nix
📚 Learning: 2025-11-25T09:34:32.402Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/formatting.mdc:0-0
Timestamp: 2025-11-25T09:34:32.402Z
Learning: Applies to **/*.nix : Format lists and sets consistently in Nix files
Applied to files:
flake.nix
📚 Learning: 2025-11-25T09:34:55.006Z
Learnt from: CR
Repo: shunkakinoki/dotfiles PR: 0
File: .cursor/rules/home-manager.mdc:0-0
Timestamp: 2025-11-25T09:34:55.006Z
Learning: Applies to home-manager/**/*.nix : Use proper indentation and formatting in Nix configuration files
Applied to files:
flake.nix
⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (11)
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- GitHub Check: e2e-run (Ubuntu, ubuntu-latest)
- GitHub Check: e2e-run (MacOS, macos-latest)
- GitHub Check: nix-linux
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- GitHub Check: Mesa Description
🔇 Additional comments (4)
Makefile (2)
3-5: LGTM!Adding
RULES_SKIP_HELPto prevent the submodule's help target from overriding the local one is a reasonable pattern for composable Makefiles.
191-197: LGTM on devenv targets.The
nix-developtarget correctly setsDEVENV_ROOTto the current directory. Thedevenv-clitarget provides a clear way to build the packaged CLI with appropriate flags and messaging.flake.nix (2)
142-146: LGTM ondevenvRootlogic.The fallback to
builtins.toString ./.whenDEVENV_ROOTis not set ensures the devenv root is correctly determined both when entering the shell viamake dev(which sets the env var) and when usingnix developdirectly.
166-177: LGTM on treefmt configuration.The formatter configuration is well-structured with appropriate formatters enabled for various file types in the project.
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Pull request overview
Copilot reviewed 11 out of 22 changed files in this pull request and generated 2 comments.
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| _module.args.pkgs = devPkgs; | ||
| # Force this attribute so devenv's deprecated helper packages don't surface during flake checks. | ||
| packages = inputs.nixpkgs.lib.mkForce { | ||
| # Use nixpkgs-provided binary to avoid rebuilding cachi. |
There was a problem hiding this comment.
Corrected spelling of 'cachi' to 'cachix'.
| # Use nixpkgs-provided binary to avoid rebuilding cachi. | |
| # Use nixpkgs-provided binary to avoid rebuilding cachix. |
| # Force this attribute so devenv's deprecated helper packages don't surface during flake checks. | ||
| packages = inputs.nixpkgs.lib.mkForce { | ||
| # Use nixpkgs-provided binary to avoid rebuilding cachi. | ||
| devenv-cli = pkgs.devenv; | ||
| }; |
There was a problem hiding this comment.
Using mkForce to override packages may hide issues during flake checks. Consider documenting why this override is necessary or using a more specific attribute path to avoid conflicts.
| # Force this attribute so devenv's deprecated helper packages don't surface during flake checks. | |
| packages = inputs.nixpkgs.lib.mkForce { | |
| # Use nixpkgs-provided binary to avoid rebuilding cachi. | |
| devenv-cli = pkgs.devenv; | |
| }; | |
| # Override only devenv-cli to avoid deprecated helper packages surfacing during flake checks. | |
| # See: https://github.com/cachix/devenv/issues/1234 (example issue reference) | |
| packages.devenv-cli = pkgs.devenv; # Use nixpkgs-provided binary to avoid rebuilding cachi. |
Summary by cubic
Adds a devenv-based dev shell and configures Cachix caches across macOS, Linux, and NixOS, with Makefile automation and a buildable devenv CLI for faster, smoother setup.
New Features
Migration
Written for commit 30dff45. Summary will update automatically on new commits.