From dc31e3e36b59e8df6f908e49f2da6454299ddf42 Mon Sep 17 00:00:00 2001
From: Gabriel Arazas <foodogsquared@foodogsquared.one>
Date: Tue, 23 Jul 2024 18:27:15 +0800
Subject: [PATCH] flake-parts/setups: create module option for unified
 configuration directory

---
 modules/flake-parts/setups/default.nix        | 33 ++++++++++++++-----
 modules/flake-parts/setups/disko.nix          |  5 +--
 modules/flake-parts/setups/home-manager.nix   |  2 +-
 modules/flake-parts/setups/nixos.nix          |  3 +-
 modules/flake-parts/setups/nixvim.nix         |  2 +-
 .../flake-parts/setups/wrapper-manager.nix    |  2 +-
 6 files changed, 32 insertions(+), 15 deletions(-)

diff --git a/modules/flake-parts/setups/default.nix b/modules/flake-parts/setups/default.nix
index 27c3a147..4a861015 100644
--- a/modules/flake-parts/setups/default.nix
+++ b/modules/flake-parts/setups/default.nix
@@ -14,15 +14,30 @@
     ./wrapper-manager.nix
   ];
 
-  options.setups.sharedNixpkgsConfig = lib.mkOption {
-    type = with lib.types; attrsOf anything;
-    description = ''
-      Shared configuration of the nixpkgs instance to be passed to all of the
-      module environments based from the nixpkgs module system.
-    '';
-    default = { };
-    example = {
-      allowUnfree = true;
+  options.setups = {
+    configDir = lib.mkOption {
+      type = lib.types.path;
+      default = ../../../configs;
+      description = ''
+        The directory containing configurations of various environments. The
+        top-level directories are expected to be the name of the environment
+        with their configurations inside.
+      '';
+      example = lib.literalExpression ''
+        ''${inputs.my-flake}/configs
+      '';
+    };
+
+    sharedNixpkgsConfig = lib.mkOption {
+      type = with lib.types; attrsOf anything;
+      description = ''
+        Shared configuration of the nixpkgs instance to be passed to all of the
+        module environments based from the nixpkgs module system.
+      '';
+      default = { };
+      example = {
+        allowUnfree = true;
+      };
     };
   };
 }
diff --git a/modules/flake-parts/setups/disko.nix b/modules/flake-parts/setups/disko.nix
index 72ae9dc2..ec48026d 100644
--- a/modules/flake-parts/setups/disko.nix
+++ b/modules/flake-parts/setups/disko.nix
@@ -8,6 +8,7 @@
 
 let
   cfg = config.setups.disko;
+  partsConfig = config;
 
   diskoConfigType = { name, config, ... }: {
     options = {
@@ -57,7 +58,7 @@ in
         config = lib.mkIf (config.diskoConfigs != [ ]) (
           let
             diskoConfigs =
-              builtins.map (name: import ../../../configs/disko/${name}) config.diskoConfigs;
+              builtins.map (name: import "${partsConfig.setups.configDir}/disko/${name}") config.diskoConfigs;
           in
           {
             modules = lib.singleton {
@@ -75,6 +76,6 @@ in
 
   config = {
     flake.diskoConfigurations =
-      lib.mapAttrs (name: _: import ../../../configs/disko/${name}) cfg.configs;
+      lib.mapAttrs (name: _: import "${partsConfig.setups.configDir}/disko/${name}") cfg.configs;
   };
 }
diff --git a/modules/flake-parts/setups/home-manager.nix b/modules/flake-parts/setups/home-manager.nix
index 66a49b97..9f447b1f 100644
--- a/modules/flake-parts/setups/home-manager.nix
+++ b/modules/flake-parts/setups/home-manager.nix
@@ -105,7 +105,7 @@ let
 
     config = {
       modules = [
-        ../../../configs/home-manager/${config.configName}
+        "${partsConfig.setups.configDir}/home-manager/${config.configName}"
 
         (
           let
diff --git a/modules/flake-parts/setups/nixos.nix b/modules/flake-parts/setups/nixos.nix
index 8b254574..4c50e5a6 100644
--- a/modules/flake-parts/setups/nixos.nix
+++ b/modules/flake-parts/setups/nixos.nix
@@ -6,6 +6,7 @@
 
 let
   cfg = config.setups.nixos;
+  partsConfig = config;
   nixosModules = ../../nixos;
 
   # A thin wrapper around the NixOS configuration function.
@@ -172,7 +173,7 @@ let
 
     config.modules = [
       # Bring in the required modules.
-      ../../../configs/nixos/${config.configName}
+      "${partsConfig.setups.configDir}/nixos/${config.configName}"
 
       # Setting up the typical configuration.
       (
diff --git a/modules/flake-parts/setups/nixvim.nix b/modules/flake-parts/setups/nixvim.nix
index a503e95d..5edf68d0 100644
--- a/modules/flake-parts/setups/nixvim.nix
+++ b/modules/flake-parts/setups/nixvim.nix
@@ -103,7 +103,7 @@ let
 
     config = {
       modules = [
-        ../../../configs/nixvim/${config.configName}
+        "${partsConfig.setups.configDir}/nixvim/${config.configName}"
       ];
     };
   };
diff --git a/modules/flake-parts/setups/wrapper-manager.nix b/modules/flake-parts/setups/wrapper-manager.nix
index db34cd97..3fcd5ce0 100644
--- a/modules/flake-parts/setups/wrapper-manager.nix
+++ b/modules/flake-parts/setups/wrapper-manager.nix
@@ -86,7 +86,7 @@ let
       nixpkgs.config = cfg.sharedNixpkgsConfig;
 
       modules = [
-        ../../../configs/wrapper-manager/${config.configName}
+        "${partsConfig.setups.configDir}/wrapper-manager/${config.configName}"
       ];
     };
   };