typst: add support to instantiate typst with a set of typst packages

Author: cherrypiejam

pkgs/by-name/ty/typst/package.nix

@@ -8,72 +8,77 @@
   xz,
   nix-update-script,
   versionCheckHook,
+  callPackage,
 }:
+let
+  typst = rustPlatform.buildRustPackage rec {
+    pname = "typst";
+    version = "0.12.0";
 
-rustPlatform.buildRustPackage rec {
-  pname = "typst";
-  version = "0.12.0";
+    src = fetchFromGitHub {
+      owner = "typst";
+      repo = "typst";
+      tag = "v${version}";
+      hash = "sha256-OfTMJ7ylVOJjL295W3Flj2upTiUQXmfkyDFSE1v8+a4=";
+    };
 
-  src = fetchFromGitHub {
-    owner = "typst";
-    repo = "typst";
-    tag = "v${version}";
-    hash = "sha256-OfTMJ7ylVOJjL295W3Flj2upTiUQXmfkyDFSE1v8+a4=";
-  };
+    cargoDeps = rustPlatform.fetchCargoVendor {
+      inherit pname version src;
+      hash = "sha256-dphMJ1KkZARSntvyEayAtlYw8lL39K7Iw0X4n8nz3z8=";
+    };
 
-  cargoDeps = rustPlatform.fetchCargoVendor {
-    inherit pname version src;
-    hash = "sha256-dphMJ1KkZARSntvyEayAtlYw8lL39K7Iw0X4n8nz3z8=";
-  };
+    nativeBuildInputs = [
+      installShellFiles
+      pkg-config
+    ];
 
-  nativeBuildInputs = [
-    installShellFiles
-    pkg-config
-  ];
+    buildInputs = [
+      openssl
+      xz
+    ];
 
-  buildInputs = [
-    openssl
-    xz
-  ];
+    env = {
+      GEN_ARTIFACTS = "artifacts";
+      OPENSSL_NO_VENDOR = true;
+    };
 
-  env = {
-    GEN_ARTIFACTS = "artifacts";
-    OPENSSL_NO_VENDOR = true;
-  };
+    postPatch = ''
+      # Fix for "Found argument '--test-threads' which wasn't expected, or isn't valid in this context"
+      substituteInPlace tests/src/tests.rs --replace-fail 'ARGS.num_threads' 'ARGS.test_threads'
+      substituteInPlace tests/src/args.rs --replace-fail 'num_threads' 'test_threads'
+    '';
 
-  postPatch = ''
-    # Fix for "Found argument '--test-threads' which wasn't expected, or isn't valid in this context"
-    substituteInPlace tests/src/tests.rs --replace-fail 'ARGS.num_threads' 'ARGS.test_threads'
-    substituteInPlace tests/src/args.rs --replace-fail 'num_threads' 'test_threads'
-  '';
+    postInstall = ''
+      installManPage crates/typst-cli/artifacts/*.1
+      installShellCompletion \
+        crates/typst-cli/artifacts/typst.{bash,fish} \
+        --zsh crates/typst-cli/artifacts/_typst
+    '';
 
-  postInstall = ''
-    installManPage crates/typst-cli/artifacts/*.1
-    installShellCompletion \
-      crates/typst-cli/artifacts/typst.{bash,fish} \
-      --zsh crates/typst-cli/artifacts/_typst
-  '';
+    cargoTestFlags = [ "--workspace" ];
 
-  cargoTestFlags = [ "--workspace" ];
+    nativeInstallCheckInputs = [ versionCheckHook ];
+    versionCheckProgramArg = [ "--version" ];
+    doInstallCheck = true;
 
-  nativeInstallCheckInputs = [
-    versionCheckHook
-  ];
-  versionCheckProgramArg = [ "--version" ];
-  doInstallCheck = true;
+    passthru.updateScript = nix-update-script { };
 
-  passthru.updateScript = nix-update-script { };
-
-  meta = {
-    changelog = "https://github.com/typst/typst/releases/tag/v${version}";
-    description = "New markup-based typesetting system that is powerful and easy to learn";
-    homepage = "https://github.com/typst/typst";
-    license = lib.licenses.asl20;
-    mainProgram = "typst";
-    maintainers = with lib.maintainers; [
-      drupol
-      figsoda
-      kanashimia
-    ];
+    meta = {
+      changelog = "https://github.com/typst/typst/releases/tag/v${version}";
+      description = "New markup-based typesetting system that is powerful and easy to learn";
+      homepage = "https://github.com/typst/typst";
+      license = lib.licenses.asl20;
+      mainProgram = "typst";
+      maintainers = with lib.maintainers; [
+        drupol
+        figsoda
+        kanashimia
+      ];
+    };
   };
-}
+
+  internal = callPackage ./with-packages.nix { };
+
+  typstFinal = self: self // { withPackages = internal.typstPackagesFor self; };
+in
+typstFinal typst

pkgs/by-name/ty/typst/with-packages.nix

@@ -0,0 +1,48 @@
+{
+  lib,
+  buildEnv,
+  typstPackages,
+  makeBinaryWrapper,
+}:
+
+let
+  typstPackagesFor =
+    typst:
+    lib.makeOverridable (
+      { ... }@typstPkgs:
+      f:
+      let
+        preparedTypstPkgs = f typstPkgs;
+        expandTypstPkgs =
+          ps:
+          if ps == [ ] then
+            ps
+          else
+            lib.foldl' (acc: p: acc ++ lib.singleton p ++ expandTypstPkgs p.typstDeps) [ ] ps;
+      in
+      buildEnv {
+        name = "${typst.name}-env";
+
+        paths = lib.unique (expandTypstPkgs preparedTypstPkgs);
+
+        buildInputs = [ makeBinaryWrapper ];
+
+        postBuild = ''
+          export TYPST_LIB_DIR="$out/lib/typst/packages"
+          mkdir -p $TYPST_LIB_DIR/preview
+
+          for path in $(find $out -type l); do
+            mv $path $TYPST_LIB_DIR/preview
+          done
+
+          cp -r ${typst}/share $out/share
+          mkdir -p $out/bin
+
+          makeWrapper "${lib.getExe typst}" "$out/bin/typst" --set TYPST_PACKAGE_CACHE_PATH $TYPST_LIB_DIR
+        '';
+      }
+    ) typstPackages;
+in
+{
+  inherit typstPackagesFor;
+}