Refactor

Signed-off-by: Oliver Davies <oliver@oliverdavies.uk>

flake.nix

@@ -6,20 +6,27 @@
     let
       system = "x86_64-linux";
       pkgs = import nixpkgs { inherit system; };
+
+      inherit (pkgs)
+        buildGoModule
+        buildNpmPackage
+        fetchFromGitHub
+        mkShell
+        ;
     in
     {
       packages.${system} = {
         openapi-generate-html = import ./openapi-generate-html.nix {
-          inherit (pkgs) buildNpmPackage fetchFromGitHub;
+          inherit buildNpmPackage fetchFromGitHub;
         };
 
         openapi-mock = import ./openapi-mock.nix {
-          inherit (pkgs) buildGoModule fetchFromGitHub;
+          inherit buildGoModule fetchFromGitHub;
         };
       };
 
       devShells.${system} = {
-        go-api = pkgs.mkShell {
+        go-api = mkShell {
           packages = with pkgs; [
             curlMinimal
             go
@@ -29,7 +36,7 @@
           shellHook = ''go version'';
         };
 
-        openapi = pkgs.mkShell {
+        openapi = mkShell {
           packages = with pkgs; [
             openapi-generator-cli
             openapi-tui