ci: don't eval full systems with specialisations

this should fix the ungodly memory usage that keeps crashing my runners

ci/run_builds.sh

@@ -6,6 +6,7 @@ err=0
 
 set_error () {
 	err=1
+	pkill -s 0 -9 nix-eval-jobs || true
 }
 
 trap set_error ERR
@@ -15,16 +16,20 @@ system="$(nix eval --impure --raw --expr 'builtins.currentSystem')"
 
 run_builds () {
 	for i in "$@" ; do
-		# nix-fast-build --eval-workers 1 --no-nom --skip-cache --attic-cache main -f "$i"
-		# sure let's waste bandwidth becuase nix-fast-build uses an ungodly amount of memory for some reason
-		nix build --no-link "$i"
+		nix-fast-build --eval-workers 1 --no-nom --skip-cache --attic-cache main -f "$i"
+		pkill -s 0 -9 nix-eval-jobs || true
 	done
 }
 
 build_systems () {
 	case "$system" in
+		# TODO this is messy and hard-coded, make an attribute set for
+		# each system containing the specializations as well as the nospec ver
 		x86_64-linux) run_builds \
-			.\#nixosConfigurations.nullbox.config.system.build.toplevel \
+			.\#nixosConfigurations.nullbox.config.specialisation.hyprland.configuration.system.build.toplevel \
+			.\#nospec.nullbox.config.system.build.toplevel \
+			.\#nixosConfigurations.slab.config.specialisation.{hyprland,nvidia}.configuration.system.build.toplevel \
+			.\#nospec.slab.config.system.build.toplevel \
 			.\#nixosConfigurations.slab.config.system.build.toplevel \
 			.\#nixosConfigurations.nixos-wsl.config.system.build.toplevel \
 			;;

flake.nix

@@ -300,6 +300,16 @@
               iso = mkISOSystem "x86_64-linux";
             }; # end nixosConfigurations
 
+            nospec = lib.mapAttrs (n: v:
+              v.extendModules {
+                modules = [
+                  (
+                    {lib, ...}: {specialisation = lib.mkForce {};}
+                  )
+                ];
+              })
+            config.flake.nixosConfigurations;
+
             homeConfigurations = {
               # minimal root config
               "root@rpi4" = mkHome {