xan: init at 0.42.0

[NotAShelf]

Adds Xan, the CSV magician.

It's a very powerful tool to work with CSV files, which I'm not surprised is
packaged already. This PR adds the derivation. Tested locally, only built on
Linux. Darwin testing appreciated.

Things done

• Built on platform(s)
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin
• For non-Linux: Is sandboxing enabled in nix.conf? (See
  Nix manual)
  • sandbox = relaxed
  • sandbox = true
• Tested, as applicable:
  • NixOS test(s)
    (look inside
    nixos/tests)
  • and/or
    package tests
  • or, for functions and "core" functionality, tests in
    lib/tests or
    pkgs/test
  • made sure NixOS tests are
    linked
    to the relevant packages
• Tested compilation of all packages that depend on this change using
  nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all
  changes have to be committed, also see
  nixpkgs-review usage
• Tested basic functionality of all binary files (usually in
  ./result/bin/)
• 25.05 Release Notes
  (or backporting
  24.11
  and
  25.05
  Release notes)
  • (Package updates) Added a release notes entry if the change is major or
    breaking
  • (Module updates) Added a release notes entry if the change is
    significant
  • (Module addition) Added a release notes entry if adding a new NixOS
    module
• Fits
  CONTRIBUTING.md.

---

Add a 👍 reaction to pull requests you find important.

[emilazy]

Copying what I said on Matrix: They have cut stable releases, but only on crates.io; see https://crates.io/crates/xan/versions. We should either fetch it from crates.io or identify the Git revision that corresponds to 0.41.0 and bump to that. (Ideally of course we convince upstream to start cutting Git tags.)

[NotAShelf]

I've updated the package to use fetchCrate until upstream makes a move.

[ddogfoodd]

nixpkgs-review result

Generated using nixpkgs-review.

Command: nixpkgs-review pr 375564

---

x86_64-linux

✅ 1 package built:

• xan

[ddogfoodd]

Thank you @NotAShelf !

[ddogfoodd]

Likely, we can switch to fetching from GitHub with the next version as upstream just said they would use tags from 0.42.0 on

[ddogfoodd]

Or would it be better to just init at 0.42.0 since this PR is not merged yet?

[NotAShelf]

I'll be changing the version to 0.42.0 shortly, as soon as I unpack my computer.

[ddogfoodd]

nixpkgs-review result

Generated using nixpkgs-review.

Command: nixpkgs-review pr 375564

---

x86_64-linux

✅ 1 package built:

• xan

[ddogfoodd]

builds and works fine on x86_64-linux, thanks again @NotAShelf !

[eljamm]

nixpkgs-review result

Generated using nixpkgs-review.

Command: nixpkgs-review pr 375564

---

x86_64-linux

✅ 1 package built:

• xan

---

aarch64-linux

✅ 1 package built:

• xan

---

x86_64-darwin

✅ 1 package built:

• xan

---

aarch64-darwin

✅ 1 package built:

• xan

[eljamm]

LGTM, thanks!

[chvp]

nixpkgs-review result

Generated using nixpkgs-review.

Command: nixpkgs-review pr 375564

---

aarch64-darwin

✅ 1 package built:

• xan

---

Also tested functionality a bit, worked without issues.

[teto]

Maybe you could mention xan in the alias throw here #377107 (comment)

[NotAShelf]

Good idea, I'll change the throw later today.

[NotAShelf]

I've updated the xsv alias to mention xan.

[teto]

nixpkgs-review result

Generated using nixpkgs-review.

Command: nixpkgs-review pr 375564

---

x86_64-linux

✅ 1 package built:

• xan