From 0eeb9623b20354d6e07a2bc83d142c88e041d69f Mon Sep 17 00:00:00 2001
From: Christoph Urlacher <christoph.urlacher@protonmail.com>
Date: Sat, 19 Jul 2025 20:20:10 +0200
Subject: [PATCH] Modules/Color: Add a helper script to output the current
 colorscheme to the terminal

---
 home/modules/color/default.nix | 76 +++++++++++++++++++++-------------
 1 file changed, 48 insertions(+), 28 deletions(-)

diff --git a/home/modules/color/default.nix b/home/modules/color/default.nix
index 043e973c..fcb3e0db 100644
--- a/home/modules/color/default.nix
+++ b/home/modules/color/default.nix
@@ -9,67 +9,87 @@
 in {
   options.modules.color = import ./options.nix {inherit lib mylib;};
 
-  config = let
-    colorDefs = import ./schemes/${color.scheme}.nix;
-
-    mkColorAssignment = defs: key: {${key} = defs.${key};};
-    mkStringColorAssignment = defs: key: {${key} = "#${defs.${key}}";};
-    mkRgbColorAssignment = defs: key: {${key} = mylib.color.hexToRGB defs.${key};};
-    mkRgbStringColorAssignment = defs: key: {${key} = mylib.color.hexToRGBString "," defs.${key};};
-  in {
-    # Helper script that processes a visual mode selection and replaces
-    # referenced colors in-place with their counterparts in this module.
-    # Usage: ":'<,'>!applyColors<cr>"
+  config = {
     home.packages = let
       mkPythonColorDef = name: value: "    '${name}': '${value}',";
 
+      # Helper script that processes a visual mode selection and replaces
+      # referenced colors in-place with their counterparts in this module.
+      # Usage: ":'<,'>!applyColors<cr>"
       applyColors =
         pkgs.writers.writePython3Bin
         "applyColors"
         {
           doCheck = false;
         }
-        (
-          builtins.concatStringsSep "\n" [
-            "colors: dict[str, str] = {"
-            (config.modules.color.hex
-              |> builtins.mapAttrs mkPythonColorDef
-              |> builtins.attrValues
-              |> builtins.concatStringsSep "\n")
-            "}"
-            (builtins.readFile ./applyColors.py)
-          ]
-        );
-    in [applyColors];
+        (builtins.concatStringsSep "\n" [
+          "colors: dict[str, str] = {"
+          (color.hex
+            |> builtins.mapAttrs mkPythonColorDef
+            |> builtins.attrValues
+            |> builtins.concatStringsSep "\n")
+          "}"
+          (builtins.readFile ./applyColors.py)
+        ]);
+
+      mkBashColorEcho = let
+        pastel = "${pkgs.pastel}/bin/pastel";
+      in
+        name: value: ''printf "%-12s" " ${name}:" && ${pastel} color "${value}" | ${pastel} format hex'';
+
+      # Helper script that prints the color scheme to the terminal
+      printNixColors =
+        pkgs.writeShellScriptBin
+        "printNixColors"
+        (builtins.concatStringsSep "\n" [
+          ''echo " ${color.scheme}:"''
+          ''echo ${lib.concatStrings (lib.replicate 20 "=")}''
+          (color.hexS
+            |> builtins.mapAttrs mkBashColorEcho
+            |> builtins.attrValues
+            |> builtins.concatStringsSep "\n")
+          ''echo ${lib.concatStrings (lib.replicate 20 "=")}''
+        ]);
+    in [
+      applyColors
+      printNixColors
+    ];
 
     # This module sets its own options to the values specified in a colorscheme file.
-    modules.color = {
+    modules.color = let
+      colorDefs = import ./schemes/${color.scheme}.nix;
+
+      mkColorAssignment = key: {${key} = colorDefs.${key};};
+      mkStringColorAssignment = key: {${key} = "#${colorDefs.${key}}";};
+      mkRgbColorAssignment = key: {${key} = mylib.color.hexToRGB colorDefs.${key};};
+      mkRgbStringColorAssignment = key: {${key} = mylib.color.hexToRGBString "," colorDefs.${key};};
+    in {
       # RRGGBB (0-F)
       hex =
         colorDefs
         |> builtins.attrNames
-        |> builtins.map (mkColorAssignment colorDefs)
+        |> builtins.map mkColorAssignment
         |> lib.mergeAttrsList;
 
       # #RRGGBB (0-F)
       hexS =
         colorDefs
         |> builtins.attrNames
-        |> builtins.map (mkStringColorAssignment colorDefs)
+        |> builtins.map mkStringColorAssignment
         |> lib.mergeAttrsList;
 
       # [RR GG BB] (0-255)
       rgb =
         colorDefs
         |> builtins.attrNames
-        |> builtins.map (mkRgbColorAssignment colorDefs)
+        |> builtins.map mkRgbColorAssignment
         |> lib.mergeAttrsList;
 
       # RR,GG,BB (0-255)
       rgbS =
         colorDefs
         |> builtins.attrNames
-        |> builtins.map (mkRgbStringColorAssignment colorDefs)
+        |> builtins.map mkRgbStringColorAssignment
         |> lib.mergeAttrsList;
     };
   };