chore: instrument releases with cog

.gitignore

@@ -8,10 +8,11 @@
 result
 
 # nixago: ignore-linked-files
+cog.toml
 adrgen.config.yml
 .conform.yaml
 treefmt.toml
 lefthook.yml
 
 # nixago-auto-created: mdbook-build-folder
-docs/book/**
+docs/book/**

cells/_automation/configs.nix

@@ -6,6 +6,34 @@
   inherit (inputs.cells) std presets;
   l = nixpkgs.lib // builtins;
 in {
+  cog = {
+    output = "cog.toml";
+    commands = [{package = nixpkgs.cocogitto;}];
+    data = {
+      tag_prefix = "v";
+      branch_whitelist = ["main" "release/**"];
+      ignore_merge_commits = true;
+      pre_bump_hooks = [
+        ''git switch -c "$(echo "release/{{version}}" | sed 's/\.[^.]*$//')"''
+        "echo {{version}} > ./VERSION"
+      ];
+      post_bump_hooks = [
+        ''git push --set-upstream origin "$(echo "release/{{version}}" | sed 's/\.[^.]*$//')"''
+        "git push origin {{version}}"
+        "cog -q changelog --at v{{version}}"
+        "git switch main"
+        "echo {{version+minor-dev}} > ./VERSION"
+        "git add VERSION"
+      ];
+      changelog = {
+        path = "CHANGELOG.md";
+        template = "remote";
+        remote = "github.com";
+        repository = "std";
+        owner = "divnix";
+      };
+    };
+  };
   treefmt = {
     data = {
       global.excludes = [

cells/_automation/devshells.nix

@@ -17,6 +17,7 @@ in
         (lib.cfg.githubsettings cell.configs.githubsettings)
         lib.cfg.lefthook
         lib.cfg.adrgen
+        (lib.dev.mkNixago cell.configs.cog)
       ];
       commands =
         [