feat: release on FlakeHub.com too

This allows flake installers to get SemVer-compatible upgrades with no effort. Cool!

Author: yajo

.github/workflows/flakehub-publish-tagged.yml

@@ -0,0 +1,28 @@
+name: "Publish tags to FlakeHub"
+on:
+  push:
+    tags:
+      - "v?[0-9]+.[0-9]+.[0-9]+*"
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: "The existing tag to publish to FlakeHub"
+        type: "string"
+        required: true
+jobs:
+  flakehub-publish:
+    runs-on: "ubuntu-latest"
+    permissions:
+      id-token: "write"
+      contents: "read"
+    steps:
+      - uses: "actions/checkout@v3"
+        with:
+          ref:
+            "${{ (inputs.tag != null) && format('refs/tags/{0}', inputs.tag) || '' }}"
+      - uses: "DeterminateSystems/nix-installer-action@main"
+      - uses: "DeterminateSystems/flakehub-push@main"
+        with:
+          visibility: "public"
+          name: "copier-org/copier"
+          tag: "${{ inputs.tag }}"

README.md

@@ -25,7 +25,14 @@ A library and CLI app for rendering project templates.
 1. Install Git 2.27 or newer.
 1. To use as a CLI app: `pipx install copier`
 1. To use as a library: `pip install copier` or `conda install -c conda-forge copier`
-1. To use with 100% reproducibility: `nix profile install github:copier-org/copier`
+
+### Nix flake
+
+To install latest Copier release with 100% reproducibility:
+
+```shell
+nix profile install 'https://flakehub.com/f/copier-org/copier/*.tar.gz'
+```
 
 ## Quick start