semi-major-ish cleanup throughout tree

modules/common.nix

@@ -7,7 +7,11 @@
 }: {
   nix.settings.experimental-features = ["nix-command" "flakes"];
   nix.settings.auto-optimise-store = true;
-  nix.package = pkgs.lixPackageSets.stable.lix;
+
+  nix.gc.automatic = true;
+  nix.gc.dates = "weekly";
+  nix.gc.options = "--delete-older-than 14d";
+  nix.optimise.automatic = true;
 
   nixpkgs.config.allowUnfree = true;
   nixpkgs.overlays = [
@@ -17,15 +21,6 @@
         config.allowUnfree = true;
       };
     })
-    (final: prev: {
-      inherit
-        (prev.lixPackageSets.stable)
-        nixpkgs-review
-        nix-eval-jobs
-        nix-fast-build
-        colmena
-        ;
-    })
   ];
 
   boot = {
@@ -33,10 +28,7 @@
     loader.systemd-boot.configurationLimit = 10;
     loader.efi.canTouchEfiVariables = true;
     loader.timeout = 2;
-    kernelParams = ["quiet" "rd.udev.log_level=3" "rd.systemd.show_status=auto"];
-    initrd.verbose = false;
-    consoleLogLevel = 3;
-    kernelPackages = pkgs.linuxPackages;
+    kernelPackages = pkgs.linuxPackages_latest;
   };
 
   time.timeZone = "Asia/Jakarta";
@@ -48,7 +40,6 @@
     locate.enable = true;
     printing.enable = true;
     openssh.enable = false;
-    pulseaudio.enable = false;
 
     pipewire.enable = true;
     pipewire.alsa.enable = true;
@@ -102,16 +93,6 @@
     eza
   ];
 
-  environment.shellAliases = {
-    sudo = "doas";
-    l = "eza --grid --all";
-    ll = "eza --long --all";
-    ls = "eza --long";
-    ".." = "cd ..";
-    "..." = "cd ../..";
-    cat = "bat";
-  };
-
   programs = {
     fish.enable = true;
 
@@ -119,22 +100,6 @@
     atuin.settings.sync_address = "https://api.atuin.sh";
     atuin.settings.enter_accept = true;
 
-    starship.enable = true;
-    starship.transientPrompt.enable = true;
-    starship.transientPrompt.left = "starship module character";
-    starship.settings = {
-      "$schema" = "https://starship.rs/config-schema.json";
-      git_status = {
-        ahead = ">";
-        behind = "<";
-        diverged = "<>";
-        renamed = "r";
-        deleted = "d";
-      };
-      character.success_symbol = "[λ](bold green)";
-      character.error_symbol = "[λ](bold red)";
-    };
-
     git.enable = true;
     git.config = {
       init.defaultBranch = "main";
@@ -147,17 +112,26 @@
     # one-off options that would live in the Home Manager section if the
     # relevant modules existed there
     obs-studio.enableVirtualCamera = true;
+
+    # NOTE: services.openssh.enable = false above only disables the SSH *server*
+    # This still starts the ssh-agent user service (SSH_AUTH_SOCK=%t/ssh-agent)
     ssh.startAgent = true;
 
     nix-ld.enable = true;
-    nix-ld.libraries = with pkgs; [fuse e2fsprogs];
+    nix-ld.libraries = with pkgs; [
+      fuse
+      e2fsprogs
+      stdenv.cc.cc
+      zlib
+      alsa-lib
+      expat
+    ];
   };
 
   fonts.packages = with pkgs; [
     # GUI fonts
     inter
     corefonts
-    vista-fonts
     roboto
     cantarell-fonts
     # fonts for i18n
@@ -175,8 +149,9 @@
 
   fonts.fontconfig.antialias = true;
   fonts.fontconfig.subpixel.rgba = "rgb";
-
-  xdg.portal.enable = true;
-  xdg.portal.config.common.default = ["gtk"];
-  xdg.portal.extraPortals = with pkgs; [xdg-desktop-portal-wlr];
+  fonts.fontconfig.hinting.enable = true;
+  fonts.fontconfig.defaultFonts = {
+    sansSerif = ["Inter"];
+    monospace = ["Iosevka Nerd Font"];
+  };
 }