feat: unify release steps

flake.nix

@@ -122,8 +122,7 @@
                 ${pre-commit-check.shellHook}
 
                 if [ -t 1 ]; then
-                  :
-                  # command -v tput >/dev/null 2>&1 && tput clear || printf '\033c'
+                  command -v tput >/dev/null 2>&1 && tput clear || printf '\033c'
                 fi
 
                 GREEN='\033[1;32m'
@@ -151,27 +150,13 @@
             #   line 2: CHANNEL (stable|alpha|beta|rc|internal|...)
             #   line 3: N (prerelease number, 0 for stable)
             postVersion ? "",
-            # Shell string — runs after VERSION + versionFiles are written, before git add.
+            # Shell string — runs after VERSION + release steps are written/run, before git add.
             # Same env vars available.
-            versionFiles ? [ ],
-            # List of { path, template } attrsets.
-            # template is a Nix function: version -> string
-            # The content is fully rendered by Nix at eval time — no shell interpolation needed.
-            # Example:
-            #   versionFiles = [
-            #     {
-            #       path = "src/version.ts";
-            #       template = version: ''export const APP_VERSION = "${version}" as const;'';
-            #     }
-            #     {
-            #       path = "internal/version/version.go";
-            #       template = version: ''
-            #         package version
-            #
-            #         const Version = "${version}"
-            #       '';
-            #     }
-            #   ];
+            release ? [ ],
+            # Unified list processed in declaration order:
+            #   { file = "path/to/file"; content = ''...$FULL_VERSION...''; }  # write file
+            #   { run = ''...shell snippet...''; }                               # run script
+            # Runtime env includes: BASE_VERSION, CHANNEL, PRERELEASE_NUM, FULL_VERSION, FULL_TAG.
             channels ? [
               "alpha"
               "beta"
@@ -186,35 +171,34 @@
             pkgs = import nixpkgs { inherit system; };
             channelList = pkgs.lib.concatStringsSep " " channels;
 
-            # Version files are fully rendered by Nix at eval time.
-            # The shell only writes the pre-computed strings — no shell interpolation in templates.
-            versionFilesScript = pkgs.lib.concatMapStrings (
-              f:
-              let
-                # We can't call f.template here since FULL_VERSION is a runtime value.
-                # Instead we pass the path and use a shell heredoc with the template
-                # rendered at runtime via the VERSION env vars.
-                renderedContent = f.template "$FULL_VERSION";
-              in
+            releaseStepsScript = pkgs.lib.concatMapStrings (
+              entry:
+              if entry ? file then
                 ''
-                mkdir -p "$(dirname "${f.path}")"
-                cat > "${f.path}" << 'NIXEOF'
-                ${renderedContent}
+                  mkdir -p "$(dirname "${entry.file}")"
+                  cat > "${entry.file}" << NIXEOF
+                  ${entry.content}
                   NIXEOF
-                log "Generated version file: ${f.path}"
+                  log "Generated version file: ${entry.file}"
                 ''
-            ) versionFiles;
+              else if entry ? run then
+                ''
+                  ${entry.run}
+                ''
+              else
+                builtins.throw "release entry must have either 'file' or 'run'"
+            ) release;
 
             script =
               builtins.replaceStrings
                 [
                   "__CHANNEL_LIST__"
-                  "__VERSION_FILES__"
+                  "__RELEASE_STEPS__"
                   "__POST_VERSION__"
                 ]
                 [
                   channelList
-                  versionFilesScript
+                  releaseStepsScript
                   postVersion
                 ]
                 (builtins.readFile ./packages/release/release.sh);
@@ -237,18 +221,20 @@
       };
 
       # ── packages ────────────────────────────────────────────────────────────
-      packages = forAllSystems (
-        system:
-        let
-          pkgs = import nixpkgs { inherit system; };
-        in
-        {
+      packages = forAllSystems (system: {
         # Expose a no-op release package for the lib repo itself (dogfood)
         release = self.lib.mkRelease {
           inherit system;
-          };
+          release = [
+            {
+              run = ''
+                sed -E -i "s#^([[:space:]]*devshell-lib\\.url = \")git\\+https://git\\.dgren\\.dev/eric/nix-flake-lib[^"]*(\";)#\\1git+https://git.dgren.dev/eric/nix-flake-lib?ref=$FULL_TAG\\2#" "$ROOT_DIR/template/flake.nix"
+                log "Updated template/flake.nix devshell-lib ref to $FULL_TAG"
+              '';
             }
-      );
+          ];
+        };
+      });
 
       # ── devShells ───────────────────────────────────────────────────────────
       devShells = forAllSystems (

packages/release/release.nix

@@ -1,13 +1,11 @@
 # release.nix
 {
   pkgs,
-  # Source of truth is always $ROOT_DIR/VERSION.
-  # Format:
-  #   line 1: X.Y.Z
-  #   line 2: CHANNEL (stable|alpha|beta|rc|internal|...)
-  #   line 3: N (prerelease number, 0 for stable)
   postVersion ? "",
-  versionFiles ? [ ],
+  release ? [ ],
+  # Unified list, processed in declaration order:
+  #   { file = "path/to/file"; content = "..."; }   — write file
+  #   { run = "shell snippet..."; }                  — run script
   channels ? [
     "alpha"
     "beta"
@@ -19,24 +17,28 @@
 let
   channelList = pkgs.lib.concatStringsSep " " channels;
 
-  versionFilesScript = pkgs.lib.concatMapStrings (f: ''
-    mkdir -p "$(dirname "${f.path}")"
-    ${f.content} > "${f.path}"
-    log "Generated version file: ${f.path}"
-  '') versionFiles;
+  releaseScript = pkgs.lib.concatMapStrings (
+    entry:
+    if entry ? file then
+      ''
+        mkdir -p "$(dirname "${entry.file}")"
+        cat > "${entry.file}" << NIXEOF
+        ${entry.content}
+        NIXEOF
+        log "Generated version file: ${entry.file}"
+      ''
+    else if entry ? run then
+      ''
+        ${entry.run}
+      ''
+    else
+      builtins.throw "release entry must have either 'file' or 'run'"
+  ) release;
 
   script =
     builtins.replaceStrings
-      [
-        "__CHANNEL_LIST__"
-        "__VERSION_FILES__"
-        "__POST_VERSION__"
-      ]
-      [
-        channelList
-        versionFilesScript
-        postVersion
-      ]
+      [ "__CHANNEL_LIST__" "__RELEASE_STEPS__" "__POST_VERSION__" ]
+      [ channelList releaseScript postVersion ]
       (builtins.readFile ./release.sh);
 in
 pkgs.writeShellApplication {

packages/release/release.sh

@@ -159,7 +159,8 @@ compute_full_version() {
 	else
 		FULL_VERSION="${BASE_VERSION}-${CHANNEL}.${PRERELEASE_NUM:-1}"
 	fi
-  export BASE_VERSION CHANNEL PRERELEASE_NUM FULL_VERSION
+	FULL_TAG="v$FULL_VERSION"
+	export BASE_VERSION CHANNEL PRERELEASE_NUM FULL_VERSION FULL_TAG
 }
 
 # ── gitlint ────────────────────────────────────────────────────────────────
@@ -187,9 +188,9 @@ validate_commit_message() {
 
 # ── version file generation ────────────────────────────────────────────────
 
-generate_version_files() {
+run_release_steps() {
 	:
-  __VERSION_FILES__
+	__RELEASE_STEPS__
 }
 
 # ── version source (built-in) ──────────────────────────────────────────────
@@ -364,7 +365,8 @@ main() {
 	do_write_version
 	log "Updated version source"
 
-  generate_version_files
+	run_release_steps
+	log "Release steps done"
 
 	do_post_version
 	log "Post-version hook done"
@@ -378,13 +380,13 @@ main() {
 	git commit -m "$commit_msg"
 	log "Created commit"
 
-  git tag "v$FULL_VERSION"
-  CREATED_TAG="v$FULL_VERSION"
-  log "Tagged v$FULL_VERSION"
+	git tag "$FULL_TAG"
+	CREATED_TAG="$FULL_TAG"
+	log "Tagged $FULL_TAG"
 
 	git push
 	git push --tags
-  log "Done — released v$FULL_VERSION"
+	log "Done — released $FULL_TAG"
 
 	trap - ERR
 }