nix: add build support for zola-based about pages

aboutPages/default.nix

@@ -0,0 +1,26 @@
+{ lib, stdenvNoCC, zola, commitShaShort ? "" }:
+
+stdenvNoCC.mkDerivation rec {
+  pname = "hagridAboutPages";
+  version = "2.1.0";
+
+  src = ./.;
+
+  nativeBuildInputs = [
+    zola
+  ];
+
+  buildPhase = ''
+    zola build --output-dir $out/about
+  '';
+
+  COMMIT_SHA_SHORT = commitShaShort;
+
+  meta = with lib; {
+    description = "A verifying keyserver (about pages)";
+    homepage = "https://gitlab.com/keys.openpgp.org/hagrid";
+    license = with licenses; [ gpl3 ];
+    maintainers = with maintainers; [ valodim ];
+    platforms = platforms.all;
+  };
+}

default.nix

@@ -4,7 +4,12 @@ rustPlatform.buildRustPackage rec {
   pname = "hagrid";
   version = "2.1.0";
 
-  src = ./.;
+  # src = ./.;
+  # avoid rebuilds when only about pages change
+  src = builtins.filterSource
+      (path: type: !(type == "directory" && baseNameOf path == "aboutPages"))
+      ./.;
+
   cargoLock = {
     lockFile = ./Cargo.lock;
     outputHashes = {

flake.nix

@@ -13,10 +13,13 @@
       packages.wkdDomainChecker = pkgs.callPackage ./wkd-domain-checker/. { };
 
       packages.default = packages.hagrid;
+
+      packages.hagridAboutPages = pkgs.callPackage ./aboutPages { };
     }) // {
       overlays.hagrid = (final: prev: {
         hagrid = self.packages."${final.system}".hagrid;
         hagridctl = self.packages."${final.system}".hagridctl;
+        hagridAboutPages = self.packages."${final.system}".hagridAboutPages;
       });
       overlays.wkdDomainChecker = (final: prev: { wkdDomainChecker = self.packages."${final.system}".wkdDomainChecker; });
 

shell.nix

@@ -25,6 +25,9 @@ pkgs.mkShell {
 
     gettext
     transifex-client
+
+    # static site generator used for /about pages
+    zola
   ];
 
   # Set Environment Variables