move resume workflow entirely to nix

.github/workflows/build-resume.yaml

@@ -22,19 +22,19 @@ jobs:
             uses: https://github.com/DeterminateSystems/nix-installer-action@main
 
           - name: Build PDF
-            run: nix develop --command latexmk -pdf main.tex && mv main.pdf Alice_Huston_Resume_Software_Engineer.pdf
+            run: nix build .#default
 
           - name: Upload PDF artifact
             uses: actions/upload-artifact@v3
             with:
               name: resume-pdf
-              path: Alice_Huston_Resume_Software_Engineer.pdf
+              path: result/Alice_Huston_Resume_Software_Engineer.pdf
 
           - name: Create Release
             if: success()
             uses: softprops/action-gh-release@v1
             with:
-              files: Alice_Huston_Resume_Software_Engineer.pdf
+              files: result/Alice_Huston_Resume_Software_Engineer.pdf
               tag_name: resume-${{ github.run_number }}
               body: "Resume PDF built from commit ${{ github.sha }}"
             env:

flake.nix

@@ -31,8 +31,34 @@
         );
 
         preCommitTool = if pkgs ? prek then pkgs.prek else pkgs.pre-commit;
+        resume_final_pdf = "Alice_Huston_Resume_Software_Engineer.pdf";
       in
       {
+        packages.default = pkgs.stdenvNoCC.mkDerivation {
+          pname = "resume-pdf";
+          version = "0.1.0";
+
+          src = pkgs.lib.cleanSource ./.;
+
+          nativeBuildInputs = [
+            tex
+          ];
+
+          buildPhase = ''
+            runHook preBuild
+            latexmk -pdf -interaction=nonstopmode -halt-on-error main.tex
+            mv main.pdf ${resume_final_pdf}
+            runHook postBuild
+          '';
+
+          installPhase = ''
+            runHook preInstall
+            mkdir -p "$out"
+            install -m 0644 ${resume_final_pdf} "$out/${resume_final_pdf}"
+            runHook postInstall
+          '';
+        };
+
         devShells.default = pkgs.mkShell {
           packages = [
             tex