nixos/version: add ANSI_COLOR

1 files changed, 76 insertions, 70 deletions

diff --git a/nixos/modules/misc/version.nix b/nixos/modules/misc/version.nix
index c929c3b37285..79b95ac654d5 100644
--- a/nixos/modules/misc/version.nix
+++ b/nixos/modules/misc/version.nix
@@ -5,34 +5,39 @@ let
   opt = options.system.nixos;
 
   inherit (lib)
-    concatStringsSep mapAttrsToList toLower
+    concatStringsSep mapAttrsToList toLower optionalString
     literalExpression mkRenamedOptionModule mkDefault mkOption trivial types;
 
   needsEscaping = s: null != builtins.match "[a-zA-Z0-9]+" s;
   escapeIfNecessary = s: if needsEscaping s then s else ''"${lib.escape [ "\$" "\"" "\\" "\`" ] s}"'';
   attrsToText = attrs:
-    concatStringsSep "\n" (
-      mapAttrsToList (n: v: ''${n}=${escapeIfNecessary (toString v)}'') attrs
-    ) + "\n";
-
-  osReleaseContents = {
-    NAME = "${cfg.distroName}";
-    ID = "${cfg.distroId}";
-    VERSION = "${cfg.release} (${cfg.codeName})";
-    VERSION_CODENAME = toLower cfg.codeName;
-    VERSION_ID = cfg.release;
-    BUILD_ID = cfg.version;
-    PRETTY_NAME = "${cfg.distroName} ${cfg.release} (${cfg.codeName})";
-    LOGO = "nix-snowflake";
-    HOME_URL = lib.optionalString (cfg.distroId == "nixos") "https://nixos.org/";
-    DOCUMENTATION_URL = lib.optionalString (cfg.distroId == "nixos") "https://nixos.org/learn.html";
-    SUPPORT_URL = lib.optionalString (cfg.distroId == "nixos") "https://nixos.org/community.html";
-    BUG_REPORT_URL = lib.optionalString (cfg.distroId == "nixos") "https://github.com/NixOS/nixpkgs/issues";
-    IMAGE_ID = lib.optionalString (config.system.image.id != null) config.system.image.id;
-    IMAGE_VERSION = lib.optionalString (config.system.image.version != null) config.system.image.version;
-  } // lib.optionalAttrs (cfg.variant_id != null) {
-    VARIANT_ID = cfg.variant_id;
-  };
+    concatStringsSep "\n"
+      (mapAttrsToList (n: v: ''${n}=${escapeIfNecessary (toString v)}'') attrs)
+    + "\n";
+
+  osReleaseContents =
+    let
+      isNixos = cfg.distroId == "nixos";
+    in
+    {
+      NAME = "${cfg.distroName}";
+      ID = "${cfg.distroId}";
+      VERSION = "${cfg.release} (${cfg.codeName})";
+      VERSION_CODENAME = toLower cfg.codeName;
+      VERSION_ID = cfg.release;
+      BUILD_ID = cfg.version;
+      PRETTY_NAME = "${cfg.distroName} ${cfg.release} (${cfg.codeName})";
+      LOGO = "nix-snowflake";
+      HOME_URL = optionalString isNixos "https://nixos.org/";
+      DOCUMENTATION_URL = optionalString isNixos "https://nixos.org/learn.html";
+      SUPPORT_URL = optionalString isNixos "https://nixos.org/community.html";
+      BUG_REPORT_URL = optionalString isNixos "https://github.com/NixOS/nixpkgs/issues";
+      ANSI_COLOR = optionalString isNixos "1;34";
+      IMAGE_ID = optionalString (config.system.image.id != null) config.system.image.id;
+      IMAGE_VERSION = optionalString (config.system.image.version != null) config.system.image.version;
+    } // lib.optionalAttrs (cfg.variant_id != null) {
+      VARIANT_ID = cfg.variant_id;
+    };
 
   initrdReleaseContents = (removeAttrs osReleaseContents [ "BUILD_ID" ]) // {
     PRETTY_NAME = "${osReleaseContents.PRETTY_NAME} (Initrd)";
@@ -56,60 +61,61 @@ in
   };
 
   options.system = {
+    nixos = {
+      version = mkOption {
+        internal = true;
+        type = types.str;
+        description = lib.mdDoc "The full NixOS version (e.g. `16.03.1160.f2d4ee1`).";
+      };
 
-    nixos.version = mkOption {
-      internal = true;
-      type = types.str;
-      description = lib.mdDoc "The full NixOS version (e.g. `16.03.1160.f2d4ee1`).";
-    };
-
-    nixos.release = mkOption {
-      readOnly = true;
-      type = types.str;
-      default = trivial.release;
-      description = lib.mdDoc "The NixOS release (e.g. `16.03`).";
-    };
+      release = mkOption {
+        readOnly = true;
+        type = types.str;
+        default = trivial.release;
+        description = lib.mdDoc "The NixOS release (e.g. `16.03`).";
+      };
 
-    nixos.versionSuffix = mkOption {
-      internal = true;
-      type = types.str;
-      default = trivial.versionSuffix;
-      description = lib.mdDoc "The NixOS version suffix (e.g. `1160.f2d4ee1`).";
-    };
+      versionSuffix = mkOption {
+        internal = true;
+        type = types.str;
+        default = trivial.versionSuffix;
+        description = lib.mdDoc "The NixOS version suffix (e.g. `1160.f2d4ee1`).";
+      };
 
-    nixos.revision = mkOption {
-      internal = true;
-      type = types.nullOr types.str;
-      default = trivial.revisionWithDefault null;
-      description = lib.mdDoc "The Git revision from which this NixOS configuration was built.";
-    };
+      revision = mkOption {
+        internal = true;
+        type = types.nullOr types.str;
+        default = trivial.revisionWithDefault null;
+        description = lib.mdDoc "The Git revision from which this NixOS configuration was built.";
+      };
 
-    nixos.codeName = mkOption {
-      readOnly = true;
-      type = types.str;
-      default = trivial.codeName;
-      description = lib.mdDoc "The NixOS release code name (e.g. `Emu`).";
-    };
+      codeName = mkOption {
+        readOnly = true;
+        type = types.str;
+        default = trivial.codeName;
+        description = lib.mdDoc "The NixOS release code name (e.g. `Emu`).";
+      };
 
-    nixos.distroId = mkOption {
-      internal = true;
-      type = types.str;
-      default = "nixos";
-      description = lib.mdDoc "The id of the operating system";
-    };
+      distroId = mkOption {
+        internal = true;
+        type = types.str;
+        default = "nixos";
+        description = lib.mdDoc "The id of the operating system";
+      };
 
-    nixos.distroName = mkOption {
-      internal = true;
-      type = types.str;
-      default = "NixOS";
-      description = lib.mdDoc "The name of the operating system";
-    };
+      distroName = mkOption {
+        internal = true;
+        type = types.str;
+        default = "NixOS";
+        description = lib.mdDoc "The name of the operating system";
+      };
 
-    nixos.variant_id = mkOption {
-      type = types.nullOr (types.strMatching "^[a-z0-9._-]+$");
-      default = null;
-      description = lib.mdDoc "A lower-case string identifying a specific variant or edition of the operating system";
-      example = "installer";
+      variant_id = mkOption {
+        type = types.nullOr (types.strMatching "^[a-z0-9._-]+$");
+        default = null;
+        description = lib.mdDoc "A lower-case string identifying a specific variant or edition of the operating system";
+        example = "installer";
+      };
     };
 
     image = {