Extract npm deps hash calculation to a separate command

app/frontend/src/components/CV/Skills.tsx

@@ -66,7 +66,7 @@ const otherSkills: OtherSkill[] = [
   {
     title: "Some of the relevant Frameworks/Tooling",
     description:
-      "Terraform, Prometheus, Grafana, React, Webpack, Rollup, Esbuild, deep understanding of Git",
+      "Terraform, Prometheus, Grafana, Nix shell, React, Webpack, Rollup, Esbuild, deep understanding of Git",
   },
   {
     title: "Software Development",

default.nix

@@ -47,7 +47,7 @@ let
       cp -a dist $out
     '';
     npmInstallFlags = "--no-audit --no-progress --no-fund";
-    npmDepsHash = "sha256-dnUbw0kfAA50ZaQ91q/fC+gZhAGNo6vrSQBz6Qf2ngo=";
+    npmDepsHash = "sha256-p4rTpy0t8aajbubvtF1TA83/FFqvfKEOPBb5T0ZRfQY=";
     npmPackFlags = [ "--ignore-scripts" ];
   };
 
@@ -65,7 +65,7 @@ let
     CGO_ENABLED = 0;
     ldflags = "-s -w -X gopkg.c3c.cz/cv/app/server/internal/version.Tag=${version} -X gopkg.c3c.cz/cv/app/server/internal/version.Commit=${rev} -X gopkg.c3c.cz/cv/app/server/internal/version.commitTime=${commitTime} -X gopkg.c3c.cz/cv/app/server/internal/version.repoUrl=${repoUrl}";
     subPackages = [ "app/server" ];
-    vendorSha256 = "sha256-BkwXD8n62+p639vTLwXpCiY8cqYtCjWxaa5tuw78u5g=";
+    vendorSha256 = "sha256-44xcyVk5KcurQLkVJv1MeAj+Pfcu53664pvVgHdyv3E=";
     overrideModAttrs = (_: {
       impureEnvVars = pkgs.lib.fetchers.proxyImpureEnvVars ++ [ "GIT_PROXY_COMMAND" "SOCKS_SERVER" "GOPROXY" ];
     });
@@ -89,6 +89,7 @@ in
       packages = [
         go
         golangci-lint
+        pkgs.prefetch-npm-deps
 
         nodejs
 
@@ -116,6 +117,31 @@ in
           npm --prefix app/frontend run fix
         '';
       }
+      {
+        name = "update-npm-deps-hash";
+        help = "Calculates and updates the npmDepsHash in default.nix";
+        command = ''
+          echo "Calculating npm deps"
+          # STDERR is poluted by the installed nodules, silencing
+          HASH=''$(prefetch-npm-deps ''$PRJ_ROOT/app/frontend/package-lock.json 2> /dev/null)
+          [[ ''$HASH = sha256* ]] && echo "Hash is ''$HASH"
+          [[ ''$HASH != sha256* ]] && echo "Failed" && exit 137
+
+          # Replace the first occurence of npmDepsHash with the new calculated hash in this file
+          sed -i "0,/npmDepsHash =/{s@npmDepsHash = .*@npmDepsHash = \"''$HASH\";@}" ''$PRJ_ROOT/default.nix
+        '';
+      }
+      {
+        name = "pre-commit";
+        help = "Format and fix found issues";
+        command = ''
+          cd ''$PRJ_ROOT
+          golangci-lint run --sort-results --out-format tab --fix
+          npm --prefix ''$PRJ_ROOT/app/frontend run fix
+
+          update-npm-deps-hash
+        '';
+      }
       {
         name = "dev";
         help = "Starts the javascript project in dev";