CI: Wrap nix devshell invocation with just

This commit also adds the flake version to the justfile's version check.

.forgejo/workflows/verify.yaml

@@ -16,10 +16,11 @@ jobs:
     container:
       image: rust:slim
     steps:
-      - name: Install action dependencies
+      - name: Set up action dependencies
         run: |
-          apt-get install --no-install-recommends --update -y \
-            nodejs git nix
+          apt-get install --no-install-recommends --update -y nodejs git nix
+          echo experimental-features = nix-command flakes >> /etc/nix/nix.conf
+          nix profile install nixpkgs#just # trixie is on nix 2.26
 
       - name: Checkout code
         uses: actions/checkout@v6
@@ -34,7 +35,7 @@ jobs:
 
       - name: Set up Rust toolchain
         run: |
-          rust_version=$(sed -nE 's/^rust-version = "(.*)"$/\1/p' Cargo.toml)
+          rust_version=$(grep '^rust-version' Cargo.toml | cut -d \" -f 2)
 
           su ci -c "
             rustup default '$rust_version'
@@ -47,9 +48,4 @@ jobs:
           "
 
       - name: Assess
-        run: |
-          ENV_PATH=$PATH su ci -c "
-            nix --experimental-features 'nix-command flakes' \
-              develop path:$PWD \
-              -c just -f $PWD/.justfile verify
-          "
+        run: /root/.nix-profile/bin/just ci-nix "$PATH" verify

.justfile

@@ -310,17 +310,17 @@ check:
 alias c := check
 
 # Run tests
-[group: 'assess']
+[group: 'assess', script]
 test pattern="":
     cargo test {{ pattern }} --timings -- --test-threads=1 'serial_tests::'
     cargo test {{ pattern }} --timings --bin en
     cargo test {{ pattern }} --timings --doc
     cargo test {{ pattern }} --timings --lib -- --skip 'serial_tests::'
-    {{ if which("wine") == "" {
-        "echo Skipping Windows tests: wine not found"
-    } else {
-        just_cmd + " test-windows"
-    } }}
+    if command -v wine >/dev/null; then
+        {{ just_cmd }} test-windows
+    else
+        echo "Skipping Windows tests: wine not found"
+    fi
 
 alias t := test
 
@@ -383,17 +383,15 @@ alias v := verify
 [script, group: 'assess']
 [arg("remote", long="remote", short="r", value="true")]
 version-assess remote="false": update
-    last_remote_tag=$(
-        git ls-remote --tags --sort=-creatordate origin |
-            head -n 1 | tr -d v | cut -d / -f 3
-    )
-    printf 'Local: %s\nRemote: %s\nManifest: %s\nLockfile: %s\n' \
-        "{{ last_local_tag }}" \
-        "$last_remote_tag" \
-        "{{ manifest_version }}" \
-        "{{ lockfile_version }}"
+    echo "Local: {{ last_local_tag }}"
+    echo "Remote: {{ last_remote_tag }}"
+    echo "Manifest: {{ manifest_version }}"
+    echo "Lockfile: {{ lockfile_version }}"
+    echo "Flake: {{ flake_version }}"
+
     test "{{ last_local_tag }}" = "{{ lockfile_version }}"
     test "{{ last_local_tag }}" = "{{ manifest_version }}"
+    test "{{ last_local_tag }}" = "{{ flake_version }}"
     if {{ if remote == "true" { "true" } else { "false" } }}; then
         test "{{ last_local_tag }}" = "$last_remote_tag"
     fi
@@ -529,12 +527,15 @@ alias ch := choose
 
 [script, private]
 ci recipes:
-    ENV_PATH="$PATH" su ci -c "{{ just_cmd }} -f '{{ justfile() }}' {{ recipes }}"
+    su ci -c "{{ just_cmd }} -f '{{ justfile() }}' {{ recipes }}"
 
 [script, private]
-ci-nix recipes:
-    ENV_PATH="$PATH" su ci -c "nix develop --command \
-        {{ just_cmd }} -f '{{ justfile() }}' {{ recipes }}"
+ci-nix path recipes:
+    ENV_PATH="{{ path }}" su ci -c "
+        nix --experimental-features 'nix-command flakes' \
+            develop "path:{{ justfile_directory() }}" --command \
+                {{ just_cmd }} -f '{{ justfile() }}' {{ recipes }}
+    "
 
 [private]
 smoke:
@@ -549,18 +550,23 @@ msvc_target := "x86_64-pc-windows-msvc"
 default_target := musl_target
 
 debug_vars := 'DEBUG=${DEBUG:-} DEBUG_FILTER=${DEBUG_FILTER:-} RUST_BACKTRACE=${RUST_BACKTRACE:-} RUSTFLAGS=${RUSTFLAGS:-}'
-just_cmd := 'just --timestamp --command-color green'
-just_cmd_no_ts := 'just --explain --command-color green'
+just_cmd := just_cmd_no_ts + ' --timestamp'
+just_cmd_no_ts := just_executable() + ' --command-color green'
 watch_cmd := "watchexec -qc -r -e rs,toml,html,css --color always -- "
 cover_cmd := 'cargo llvm-cov --color always --ignore-filename-regex "main\.rs|log\.rs"'
 
 last_local_tag := `git tag --sort=-creatordate | head -n 1 | tr -d v`
+last_remote_tag := ```
+    git ls-remote --tags --sort=-creatordate origin |
+        head -n 1 | tr -d v | cut -d / -f 3
+```
 manifest_version := `grep "^version" Cargo.toml | cut -d \" -f 2`
 lockfile_version := ```
     grep -A 1 'name = "en"' Cargo.lock \
         | grep version | cut -d '"' -f 2
 ```
+flake_version := `grep '^ *version = "' flake.nix | cut -d \" -f 2`
 
 ## OPTIONS
-set unstable
+set unstable # TODO remove this once all used features are stabilized
 set lazy

flake.nix

@@ -5,7 +5,7 @@
 
     outputs = { nixpkgs, self }: let
         name = "en";
-        version = "0.4.0";
+        version = "0.4.0-alpha";
 
         supportedSystems = [
             "x86_64-linux"