diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index 8ad2f56..2ee2395 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -1,4 +1,3 @@
-
 name: "Check & Build (with Cachix)"
 on:
   push:
@@ -8,33 +7,33 @@ jobs:
   check:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2.3.4
-    - uses: cachix/install-nix-action@v13
-      with:
-        install_url: https://nixos-nix-install-tests.cachix.org/serve/8d8xah1f6ypccpmw9cfsl8ziw1chj4cl/install
-        install_options: '--tarball-url-prefix https://nixos-nix-install-tests.cachix.org/serve'
-        extra_nix_config: >
-          experimental-features = nix-command flakes
-          system-features = nixos-test benchmark big-parallel kvm recursive-nix
-          extra-platforms = aarch64-linux
-          keep-going = true
-          substituters =
-          https://aciceri-fleet.cachix.org
-          https://nrdxp.cachix.org
-          https://nix-community.cachix.org
-          arm.cachix.org
-          https://cache.nixos.org
-          trusted-public-keys = >
-          aciceri-fleet.cachix.org-1:WiHJIK4UFTdfvWx0lG3mCR4EddyYsRhIuMGSje3/YGI=
-          nrdxp.cachix.org-1:Fc5PSqY2Jm1TrWfm88l6cvGWwz3s93c6IOifQWnhNW4=
-          nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs=
-          arm.cachix.org-1:K3XjAeWPgWkFtSS9ge5LJSLw3xgnNqyOaG7MDecmTQ8=
-          cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY=
-    - uses: cachix/cachix-action@v10
-      with:
-        name: aciceri-fleet
-        authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
-    - run: sed -i 's/#\(.*checks.aarch64.*\)/\1/g' flake.nix # disabling aarch64 outputs
-    - run: nix -Lv flake check
-    - run: nix -Lv build ".#nixosConfigurations.pc.config.system.build.toplevel"
-    - run: nix -Lv develop -c echo OK
+      - uses: actions/checkout@v2.3.4
+      - uses: cachix/install-nix-action@v13
+        with:
+          install_url: https://nixos-nix-install-tests.cachix.org/serve/8d8xah1f6ypccpmw9cfsl8ziw1chj4cl/install
+          install_options: "--tarball-url-prefix https://nixos-nix-install-tests.cachix.org/serve"
+          extra_nix_config: >
+            experimental-features = nix-command flakes
+            system-features = nixos-test benchmark big-parallel kvm recursive-nix
+            extra-platforms = aarch64-linux
+            keep-going = true
+            substituters =
+            https://aciceri-fleet.cachix.org
+            https://nrdxp.cachix.org
+            https://nix-community.cachix.org
+            arm.cachix.org
+            https://cache.nixos.org
+            trusted-public-keys = >
+            aciceri-fleet.cachix.org-1:WiHJIK4UFTdfvWx0lG3mCR4EddyYsRhIuMGSje3/YGI=
+            nrdxp.cachix.org-1:Fc5PSqY2Jm1TrWfm88l6cvGWwz3s93c6IOifQWnhNW4=
+            nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs=
+            arm.cachix.org-1:K3XjAeWPgWkFtSS9ge5LJSLw3xgnNqyOaG7MDecmTQ8=
+            cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY=
+      - uses: cachix/cachix-action@v10
+        with:
+          name: aciceri-fleet
+          authToken: "${{ secrets.CACHIX_AUTH_TOKEN }}"
+      - run: sed 's/#\(.*\)/\1/g' flake.nix # disabling outputs unsupported inside the GitHub action
+      - run: nix -Lv flake check
+      - run: nix -Lv build ".#nixosConfigurations.pc.config.system.build.toplevel"
+      - run: nix -Lv develop -c echo OK
diff --git a/flake.nix b/flake.nix
index 2c86fdf..f177b97 100644
--- a/flake.nix
+++ b/flake.nix
@@ -182,9 +182,11 @@
       }
     // {
       budModules = { devos = import ./bud; };
-      # checks.aarch64-linux = { }; # this line will be uncommented by Github Action in order since it can't build aarch64 derivations
-    }
-    // {
+
+      # checks.aarch64-linux = { }; # ga-uncomment
+      # checks.x86_64-darwin = { }; # ga-uncomment
+      # packages.x86_64-darwin = { }; # ga-uncomment
+
       darwinConfigurations."mbp" = darwin.lib.darwinSystem {
         system = "x86_64-darwin";
         modules = [ home.darwinModules.home-manager ./hosts/mbp ];
diff --git a/pkgs/default.nix b/pkgs/default.nix
index 3484178..6ff38fd 100644
--- a/pkgs/default.nix
+++ b/pkgs/default.nix
@@ -2,7 +2,5 @@ final: prev: {
   # keep sources this first
   sources = prev.callPackage (import ./_sources/generated.nix) { };
   customEmacs = prev.callPackage (import ./emacs) { };
-  ungoogled-chromium = import ./ungoogled-chromium { inherit prev; };
-  vscodium = import ./vscodium { inherit prev; };
   # then, call packages with `final.callPackage`
 }
diff --git a/pkgs/ungoogled-chromium/default.nix b/pkgs/ungoogled-chromium/default.nix
deleted file mode 100644
index 2074a0b..0000000
--- a/pkgs/ungoogled-chromium/default.nix
+++ /dev/null
@@ -1,10 +0,0 @@
-{ prev, ... }:
-
-prev.runCommandNoCC "wrap-chromium"
-{ buildInputs = with prev.pkgs; [ makeWrapper ]; }
-  ''
-    makeWrapper ${prev.pkgs.chromium}/bin/chromium $out/bin/chromium \
-      --add-flags "--enable-features=UseOzonePlatform" \
-      --add-flags "--ozone-platform=wayland"
-    ln -sf ${prev.pkgs.chromium}/share $out/share
-  ''
diff --git a/pkgs/vscodium/default.nix b/pkgs/vscodium/default.nix
deleted file mode 100644
index d73377c..0000000
--- a/pkgs/vscodium/default.nix
+++ /dev/null
@@ -1,10 +0,0 @@
-{ prev, ... }:
-
-prev.runCommandNoCC "codium"
-{ buildInputs = with prev.pkgs; [ makeWrapper ]; }
-  ''
-    makeWrapper ${prev.pkgs.vscodium}/bin/codium $out/bin/codium \
-      --add-flags "--enable-features=UseOzonePlatform" \
-      --add-flags "--ozone-platform=wayland"
-    ln -sf ${prev.pkgs.vscodium}/share $out/share
-  ''
diff --git a/users/profiles/emacs/default.nix b/users/profiles/emacs/default.nix
index e1bfd29..63532ff 100644
--- a/users/profiles/emacs/default.nix
+++ b/users/profiles/emacs/default.nix
@@ -12,7 +12,6 @@
   };
 
   home.packages = with pkgs; [
-    python-language-server
     python
     fd
     ag
@@ -29,5 +28,5 @@
         mimeType = "x-scheme-handler/org-protocol";
       }
     )
-  ];
+  ] ++ (if pkgs.system == "x86_64-linux" then [ python-language-server ] else [ ]);
 }