make evremap DRYer

hosts/potatobook-g/configuration.nix

@@ -1,23 +1,4 @@
-{ pkgs, ... }:
-let 
-  evremap = pkgs.rustPlatform.buildRustPackage {
-    pname = "evremap";
-    version = "0.1.0";
-    src = pkgs.fetchFromGitHub {
-      owner = "wez";
-      repo = "evremap";
-      rev = "4480c4eda223b98899b0fbd926bc34f7bd0e1a18";
-      sha256 = "sha256-BxSrphgW1n465FX6bKVkq6O0XE2JqanfSYlsGwWUWkQ=";
-    };
-    cargoHash = "";
-    cargoLock.lockFile = ../../other/evremap.Cargo.lock;
-    postPatch = ''
-      cp ${../../other/evremap.Cargo.lock} Cargo.lock
-    '';
-    nativeBuildInputs = [ pkgs.pkg-config ];
-    buildInputs = [ pkgs.libevdev ];
-  };
-in {  
+{ pkgs, ... }: {  
   nix.settings = {
     trusted-substituters = [
       "https://t2linux.cachix.org"
@@ -185,10 +166,6 @@ in {
         fi
       '';
     };
-    evremap = {
-      script = "${evremap}/bin/evremap remap ${../../other/remaps.toml}";
-      wantedBy = ["multi-user.target"];
-    };
   };
 
   services.logind.extraConfig = ''