packages/build-support: add drv-parts custom backends support

packages/build-support/default.nix

@@ -3,6 +3,8 @@
 {
   imports = [
     ./options.nix
+
+    ./drv-parts
   ];
 
   builders = rec {

packages/build-support/drv-parts/backends/default.nix

@@ -0,0 +1,5 @@
+{
+  imports = [
+    ./options.nix
+  ];
+}

packages/build-support/drv-parts/backends/options.nix

@@ -0,0 +1,12 @@
+{ lib, ... }:
+with lib;
+
+{
+  options = {
+    drv-backends = mkOption {
+      description = "drv-parts backends";
+      type = with types; attrsOf raw;
+      default = {};
+    };
+  };
+}

packages/build-support/drv-parts/default.nix

@@ -0,0 +1,10 @@
+{ config, inputs, ... }:
+
+{
+  imports = [
+    ./backends
+  ];
+  _module.args = {
+    drv-backends = inputs.drv-parts.drv-backends // config.drv-backends;
+  };
+}