working towards selectable wm

build.conf.nix

@@ -1,8 +1,13 @@
+{ wm ? null, ...}:
 with builtins;
-{
-  wm = "plasma";
+rec {
+  wm = wm;
+
+  x11-wms = ["plasma" "xmonad" "i3"];
+  wayland-wms = ["hyprland" "sway"];
+  wms = x11-wms ++ wayland-wms;
 
   # very, very non-exhaustive of course
-  is-x11     = wm: elem wm ["plasma" "xmonad" "i3"];
-  is-wayland = wm: elem wm ["hyprland" "sway"];
+  is-x11     = wm: elem wm x11-wms;
+  is-wayland = wm: elem wm wayland-wms;
 }

configuration.nix

@@ -2,9 +2,10 @@
 # your system.  Help is available in the configuration.nix(5) man page
 # and in the NixOS manual (accessible by running ‘nixos-help’).
 
+build-conf:
 { config, pkgs, ... }:
 let
-    conf = import ./build.conf.nix;
+    conf = build-conf;
     x11 = conf.is-x11 conf.wm;
 in
 {

flake.lock

@@ -1,5 +1,23 @@
 {
   "nodes": {
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1689068808,
+        "narHash": "sha256-6ixXo3wt24N/melDWjq70UuHQLxGV8jZvooRanIHXw0=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "919d646de7be200f3bf08cb76ae1f09402b6f9b4",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
     "home-manager": {
       "inputs": {
         "nixpkgs": [
@@ -7,11 +25,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1692081771,
-        "narHash": "sha256-LWhyDz3gi1RzTcW6e6iwfs4VuDWFajOexBKygNIqvQM=",
+        "lastModified": 1692131549,
+        "narHash": "sha256-MFjI8NL63/6HjMZpvJgnB/Pgg2dht22t45jOYtipZig=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "18791781ea86cbec6bce8bcb847444b9c73b8b3b",
+        "rev": "75cfe974e2ca05a61b66768674032b4c079e55d4",
         "type": "github"
       },
       "original": {
@@ -38,9 +56,25 @@
     },
     "root": {
       "inputs": {
+        "flake-utils": "flake-utils",
         "home-manager": "home-manager",
         "nixpkgs": "nixpkgs"
       }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
     }
   },
   "root": "root",

flake.nix

@@ -4,21 +4,31 @@
   inputs.nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
   inputs.home-manager.url = "github:nix-community/home-manager";
   inputs.home-manager.inputs.nixpkgs.follows = "nixpkgs";
+  inputs.flake-utils.url = "github:numtide/flake-utils";
 
-  outputs = inputs@{ self, nixpkgs, home-manager, ... }: {
-    nixosConfigurations = {
+  outputs = inputs@{ self, nixpkgs, home-manager, flake-utils, ... }:
+  let
+    conf = (import ./build.conf.nix) {};
+  in
+  {
+    nixosConfigurations =
+    flake-utils.lib.eachSystem conf.wms (wm:
+    let
+      conf = import (./build.conf.nix) { wm = wm; };
+    in
+    {
       nix = nixpkgs.lib.nixosSystem {
         system = "x86_64-linux";
         modules = [
-          ./configuration.nix
+          (./configuration.nix conf)
           home-manager.nixosModules.home-manager
           {
             home-manager.useGlobalPkgs = true;
             home-manager.useUserPackages = true;
-            home-manager.users.mbk = import ./home.nix;
+            home-manager.users.mbk = (import ./home.nix) conf;
           }
         ];
       };
-    };
+    });
   };
 }

home.nix

@@ -1,6 +1,7 @@
+build-conf:
 { config, pkgs, ... }:
 let
-  conf = import ./build.conf.nix;
+  conf = build-conf;
   wm = conf.wm;
 in
 {
@@ -131,11 +132,9 @@ in
 
   programs.git = {
     enable = true;
-    extraConfig = {
     userName = "mehbark";
     userEmail = "terezi@pyrope.net";
   };
-  };
 
   programs.git.difftastic = {
     enable = true;