rl-next: Fix and support markdown frontmatter syntax

doc/manual/rl-next/hash-format-nix32.md

@@ -1,6 +1,7 @@
+---
 synopsis: Rename hash format `base32` to `nix32`
-prs: #9452
-description: {
+prs: 9452
+---
 
 Hash format `base32` was renamed to `nix32` since it used a special nix-specific character set for 
 [Base32](https://en.wikipedia.org/wiki/Base32).

doc/manual/rl-next/mounted-ssh-store.md

@@ -1,9 +1,8 @@
+---
 synopsis: Mounted SSH Store
-issues: #7890
-prs: #7912
-description: {
+issues: 7890
+prs: 7912
+---
 
 Introduced the store [`mounted-ssh-ng://`](@docroot@/command-ref/new-cli/nix3-help-stores.md).
 This store allows full access to a Nix store on a remote machine and additionally requires that the store be mounted in the local filesystem.
-
-}

doc/manual/rl-next/nix-config-show.md

@@ -1,8 +1,7 @@
-synopsis: `nix config show`
-issues: #7672
-prs: #9477
-description: {
+---
+synopsis: Rename to `nix config show`
+issues: 7672
+prs: 9477
+---
 
 `nix show-config` was renamed to `nix config show`, and `nix doctor` was renamed to `nix config check`, to be more consistent with the rest of the command-line interface.
-
-}

doc/manual/rl-next/nix-env-json-drv-path.md

@@ -1,9 +1,6 @@
+---
 synopsis: Fix `nix-env --query --drv-path --json`
-prs: #9257
-description: {
+prs: 9257
+---
 
 Fixed a bug where `nix-env --query` ignored `--drv-path` when `--json` was set.
-
-}
-
-

doc/manual/rl-next/nix-hash-convert.md

@@ -1,6 +1,7 @@
+---
 synopsis: Add `nix hash convert`
-prs: #9452
-description: {
+prs: 9452
+---
 
 New [`nix hash convert`](https://github.com/NixOS/nix/issues/8876) sub command with a fast track
 to stabilization! Examples:
@@ -44,4 +45,3 @@ The following commands are still available but will emit a deprecation warning.
 - `nix hash to-base64 $hash1 $hash2`: Use `nix hash convert --to base64 $hash1 $hash2` instead.
 - `nix hash to-sri $hash1 $hash2`: : Use `nix hash convert --to sri $hash1 $hash2`
   or even just `nix hash convert $hash1 $hash2` instead.
-}

doc/manual/rl-next/source-positions-in-errors.md

@@ -1,7 +1,8 @@
+---
 synopsis: Source locations are printed more consistently in errors
-issues: #561
-prs: #9555
-description: {
+issues: 561
+prs: 9555
+---
 
 Source location information is now included in error messages more
 consistently. Given this code:
@@ -39,5 +40,3 @@ error:
 
        error: value is a set while a string was expected
 ```
-
-}

doc/manual/src/contributing/hacking.md

@@ -257,17 +257,16 @@ User-visible changes should come with a release note.
 Here's what a complete entry looks like. The file name is not incorporated in the document.
 
 ```
+---
 synopsis: Basically a title
-issues: #1234
-prs: #1238
-description: {
+issues: 1234
+prs: 1238
+---
 
 Here's one or more paragraphs that describe the change.
 
 - It's markdown
 - Add references to the manual using @docroot@
-
-}
 ```
 
 Significant changes should add the following header, which moves them to the top.

flake.nix

@@ -182,7 +182,7 @@
           "--enable-internal-api-docs"
         ];
 
-        changelog-d = pkgs.buildPackages.changelog-d;
+        changelog-d = pkgs.buildPackages.callPackage ./misc/changelog-d.nix { };
 
         nativeBuildDeps =
           [
@@ -691,6 +691,11 @@
         perlBindings = self.hydraJobs.perlBindings.${system};
         installTests = self.hydraJobs.installTests.${system};
         nixpkgsLibTests = self.hydraJobs.tests.nixpkgsLibTests.${system};
+        rl-next =
+          let pkgs = nixpkgsFor.${system}.native;
+          in pkgs.buildPackages.runCommand "test-rl-next-release-notes" { } ''
+          LANG=C.UTF-8 ${(commonDeps { inherit pkgs; }).changelog-d}/bin/changelog-d ${./doc/manual/rl-next} >$out
+        '';
       } // (lib.optionalAttrs (builtins.elem system linux64BitSystems)) {
         dockerImage = self.hydraJobs.dockerImage.${system};
       });

misc/changelog-d.cabal.nix

@@ -0,0 +1,31 @@
+{ mkDerivation, aeson, base, bytestring, cabal-install-parsers
+, Cabal-syntax, containers, directory, filepath, frontmatter
+, generic-lens-lite, lib, mtl, optparse-applicative, parsec, pretty
+, regex-applicative, text, pkgs
+}:
+let rev = "f30f6969e9cd8b56242309639d58acea21c99d06";
+in
+mkDerivation {
+  pname = "changelog-d";
+  version = "0.1";
+  src = pkgs.fetchurl {
+    name = "changelog-d-${rev}.tar.gz";
+    url = "https://codeberg.org/roberth/changelog-d/archive/${rev}.tar.gz";
+    hash = "sha256-8a2+i5u7YoszAgd5OIEW0eYUcP8yfhtoOIhLJkylYJ4=";
+  } // { inherit rev; };
+  isLibrary = false;
+  isExecutable = true;
+  libraryHaskellDepends = [
+    aeson base bytestring cabal-install-parsers Cabal-syntax containers
+    directory filepath frontmatter generic-lens-lite mtl parsec pretty
+    regex-applicative text
+  ];
+  executableHaskellDepends = [
+    base bytestring Cabal-syntax directory filepath
+    optparse-applicative
+  ];
+  doHaddock = false;
+  description = "Concatenate changelog entries into a single one";
+  license = lib.licenses.gpl3Plus;
+  mainProgram = "changelog-d";
+}

misc/changelog-d.nix

@@ -0,0 +1,31 @@
+# Taken temporarily from <nixpkgs/pkgs/by-name/ch/changelog-d/package.nix>
+{
+  callPackage,
+  lib,
+  haskell,
+  haskellPackages,
+}:
+
+let
+  hsPkg = haskellPackages.callPackage ./changelog-d.cabal.nix { };
+
+  addCompletions = haskellPackages.generateOptparseApplicativeCompletions ["changelog-d"];
+
+  haskellModifications =
+    lib.flip lib.pipe [
+      addCompletions
+      haskell.lib.justStaticExecutables
+    ];
+
+  mkDerivationOverrides = finalAttrs: oldAttrs: {
+
+    version = oldAttrs.version + "-git-${lib.strings.substring 0 7 oldAttrs.src.rev}";
+
+    meta = oldAttrs.meta // {
+      homepage = "https://codeberg.org/roberth/changelog-d";
+      maintainers = [ lib.maintainers.roberth ];
+    };
+
+  };
+in
+  (haskellModifications hsPkg).overrideAttrs mkDerivationOverrides