add rebuild alias automatically

hosts/default.nix

@@ -1,7 +1,7 @@
 { inputs, ... }:
 {
   "desktop" = inputs.nixpkgs.lib.nixosSystem {
-    specialArgs = { inherit inputs; };
+    specialArgs = { inherit inputs; hostname = "desktop"; };
     modules = [
       ./desktop
       ../modules
@@ -9,7 +9,7 @@
     ];
   };
   "laptop" = inputs.nixpkgs.lib.nixosSystem {
-    specialArgs = { inherit inputs; };
+    specialArgs = { inherit inputs; hostname = "laptop"; };
     modules = [
       ./laptop
       ../modules
@@ -17,7 +17,7 @@
     ];
   };
   "rpi" = inputs.nixpkgs.lib.nixosSystem {
-    specialArgs = { inherit inputs; };
+    specialArgs = { inherit inputs; hostname = "rpi"; };
     modules = [
       ./rpi
       ../modules

hosts/desktop/default.nix

@@ -86,6 +86,7 @@
         theme.enable = true;
         printing.enable = true;
         mpd.enable = true;
+        fish.enable = true;
 
         autorandr = {
           enable = true;
@@ -110,13 +111,6 @@
           };
         };
 
-        fish = {
-          enable = true;
-          extraAliases = {
-            "rebuild" = "sudo nixos-rebuild switch --flake ~/nix#desktop -v";
-          };
-        };
-
         i3 = {
           enable = true;
           workspaceOutput = {

hosts/laptop/default.nix

@@ -64,6 +64,7 @@
         theme.enable = true;
         printing.enable = true;
         mpd.enable = true;
+        fish.enable = true;
 
         xserver = {
           enable = true;
@@ -82,12 +83,6 @@
           ];
         };
 
-        fish = {
-          enable = true;
-          extraAliases = {
-            "rebuild" = "sudo nixos-rebuild switch --flake ~/nix#laptop -v";
-          };
-        };
 
         ssh = {
           enable = true;

hosts/rpi/default.nix

@@ -83,18 +83,13 @@
       stuff = {
         git.enable = true;
         vim.enable = true;
+        fish.enable = true;
         ssh = {
           enable = true;
           authKeys = [
             "ssh-rsa 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 krizej@krizej-pc"
           ];
         };
-        fish = {
-          enable = true;
-          extraAliases = {
-            "rebuild" = "sudo nixos-rebuild switch --flake ~/nix#rpi -v";
-          };
-        };
       };
     };
   };

modules/stuff/fish.nix

@@ -1,4 +1,4 @@
-{ lib, pkgs, config, ... }: let
+{ lib, pkgs, config, hostname, ... }: let
   inherit (lib) mkIf mkEnableOption mkOption types mergeAttrs;
   cfg = config.chuj.stuff.fish;
   user = config.chuj.system.user;
@@ -33,6 +33,10 @@ in {
         "myip" = "curl ifconfig.me";
         "0x0" = ''curl -F"file=@$argv" https://0x0.st'';
         "wget" = "${pkgs.wget}/bin/wget --hsts-file='${XDG_DATA_HOME}/wget-hsts'";
+
+        # ulimit -n 4096 fixes the "too many open files" error i get sometimes when
+        # updating the entire flake
+        "rebuild" = "ulimit -n 4096 && sudo nixos-rebuild switch --flake ~/nix#${hostname} -v";
       } cfg.extraAliases;
 
       shellAbbrs = { # mkif xclip in pkgs