flake works

bin/rzr

@@ -178,4 +178,5 @@ if __name__ == "__main__":
         print("profile '{}' applied".format(args.profile))
 
     else:
-        parser.error("either set a profile or --iterate")
+        print("either set a profile or the --iterate flag")
+        exit(1)

flake.nix

@@ -18,17 +18,20 @@
 
           packages.rzr =
 
-            pkgs.python3Packages.buildPythonApplication {
+            pkgs.python3Packages.buildPythonApplication rec {
 
               name = "rzr";
               src = self;
 
-              buildPhase = ''
+              nativeBuildInputs = with pkgs; [
-              '';
+                wrapGAppsHook
-              installPhase = ''
+              ];
-                ls -l
+              
-                exit 1
+              propagatedBuildInputs = with pkgs; [
-              '';
+                python3Packages.colour
+                python3Packages.openrazer
+                python3Packages.toml
+              ];
               
             };
 
@@ -39,7 +42,20 @@
           devShell = pkgs.mkShell {
             buildInputs = with pkgs; [
               python3
+              python3Packages.pip
+              python3Packages.virtualenv
+              python3Packages.colour
+              python3Packages.openrazer
+              python3Packages.toml
             ];
+            shellHook = ''
+              if [ ! -d .venv ]; then
+                python -m venv .venv
+              fi
+              source .venv/bin/activate
+              pip install --upgrade pip
+              pip install -r requirements.txt
+            '';
           };
 
         }

shell.nix

@@ -1,39 +0,0 @@
-{ pkgs ? import <nixpkgs> {} }:
-pkgs.mkShell {
-  buildInputs = with pkgs; [
-    python3
-    python3Packages.virtualenv
-    python3Packages.colour
-    python3Packages.openrazer
-    python3Packages.toml
-  ];
-  shellHook = ''
-    function log_header {
-      echo -ne "==> \e[32m\e[1m$1\e[0m\n"
-    }
-    function log_subheader {
-      echo -ne "--> \e[33m\e[1m$1\e[0m\n"
-    }
-    function log {
-      echo -ne "    $1\n"
-    }
-
-    echo ""
-    log_header "python_environment"
-    if [ ! -d .venv ]; then
-      python -m venv .venv
-    fi
-    source .venv/bin/activate
-    log_subheader "upgrading pip"
-    pip install --upgrade pip
-    echo ""
-    if [ -s requirements.txt ]; then
-      log_subheader "found requirements.txt, installing packages"
-      pip install -r requirements.txt
-      echo ""
-    fi
-    log_header "package versions"
-    log "$(python --version)"
-    log "$(pip --version)"
-  '';
-}