codex: manage generated skills with home-manager

home-manager/codex-generated-skills.nix

@@ -0,0 +1,67 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}: let
+  cfg = config.myModules.codexGeneratedSkills;
+in {
+  options.myModules.codexGeneratedSkills = {
+    enable = lib.mkEnableOption "generated Codex skill setup";
+
+    codexHome = lib.mkOption {
+      type = lib.types.str;
+      default = "${config.home.homeDirectory}/.codex";
+      description = "Codex home directory.";
+    };
+
+    skillsDir = lib.mkOption {
+      type = lib.types.str;
+      default = "${cfg.codexHome}/skills";
+      description = "Codex skills directory.";
+    };
+
+    primaryRuntimeDir = lib.mkOption {
+      type = lib.types.str;
+      default = "${config.home.homeDirectory}/.cache/codex-runtimes/codex-primary-runtime";
+      description = "Codex primary runtime cache directory.";
+    };
+  };
+
+  config = lib.mkIf cfg.enable {
+    home.activation.setupCodexGeneratedSkills = lib.hm.dag.entryAfter ["writeBoundary"] ''
+      codex_home=${lib.escapeShellArg cfg.codexHome}
+      skills_dir=${lib.escapeShellArg cfg.skillsDir}
+      runtime_skills_root=${lib.escapeShellArg "${cfg.primaryRuntimeDir}/skills/skills"}
+
+      mkdir -p "$skills_dir"
+
+      if [ -x ${lib.escapeShellArg "${pkgs.codex}/bin/codex"} ]; then
+        if ! CODEX_HOME="$codex_home" ${lib.escapeShellArg "${pkgs.codex}/bin/codex"} debug prompt-input "bootstrap generated Codex skills" >/dev/null; then
+          echo "setupCodexGeneratedSkills: codex failed to bootstrap .system skills" >&2
+        fi
+      else
+        echo "setupCodexGeneratedSkills: codex binary not found; skipping .system skill bootstrap" >&2
+      fi
+
+      if [ -d "$runtime_skills_root" ]; then
+        tmp_dir="$(mktemp -d "''${TMPDIR:-/tmp}/codex-primary-runtime.XXXXXX")"
+        trap 'rm -rf "$tmp_dir"' EXIT
+
+        mkdir -p "$tmp_dir/codex-primary-runtime"
+        for skill_name in slides spreadsheets; do
+          if [ -d "$runtime_skills_root/$skill_name" ]; then
+            cp -R "$runtime_skills_root/$skill_name" "$tmp_dir/codex-primary-runtime/$skill_name"
+          fi
+        done
+
+        if [ "$(find "$tmp_dir/codex-primary-runtime" -mindepth 1 -maxdepth 1 -type d | wc -l | tr -d ' ')" != "0" ]; then
+          rm -rf "$skills_dir/codex-primary-runtime"
+          mv "$tmp_dir/codex-primary-runtime" "$skills_dir/codex-primary-runtime"
+        fi
+      else
+        echo "setupCodexGeneratedSkills: runtime skills not found at $runtime_skills_root; skipping codex-primary-runtime" >&2
+      fi
+    '';
+  };
+}