python3Packages.pypdfium2: init at 4.30.1

2025-01-26 12:22:20 -05:00
parent 81b9a5f9d1
commit 82ffb11a67
2 changed files with 125 additions and 0 deletions
@@ -0,0 +1,123 @@
+{
+  lib,
+  pkgs,
+  buildPythonPackage,
+  fetchFromGitHub,
+  fetchurl,
+  setuptools-scm,
+  pdfium-binaries,
+  numpy,
+  pillow,
+  pytestCheckHook,
+  python,
+}:
+
+let
+  pdfiumVersion = "${pdfium-binaries.version}";
+
+  headers = fetchurl {
+    url = "https://pdfium.googlesource.com/pdfium/+archive/refs/heads/chromium/${pdfiumVersion}/public.tar.gz";
+    hash = "sha256-vKfs4Jd8LEtA3aTI+DcJMS0VOErq1IR1eThnMlxiER0=";
+  };
+
+  # They demand their own fork of ctypesgen
+  ctypesgen = buildPythonPackage rec {
+    pname = "ctypesgen";
+    version = "1.1.1+g${src.rev}"; # the most recent tag + git version
+    pyproject = true;
+
+    src = fetchFromGitHub {
+      owner = "pypdfium2-team";
+      repo = "ctypesgen";
+      rev = "848e9fbb1374f7f58a7ebf5e5da5c33292480b30";
+      hash = "sha256-3JA7cW/xaEj/DxMHEypROwrKGo7EwUEcipRqALTvydw=";
+    };
+
+    build-system = [
+      setuptools-scm
+    ];
+
+    env.SETUPTOOLS_SCM_PRETEND_VERSION = "${version}";
+  };
+
+in
+buildPythonPackage rec {
+  pname = "pypdfium2";
+  version = "4.30.1";
+  pyproject = true;
+
+  src = fetchFromGitHub {
+    owner = "pypdfium2-team";
+    repo = "pypdfium2";
+    tag = version;
+    hash = "sha256-v8f/XruGJYK3H9z4Q1rLg4fEnPHa8tTOlNTBMVxPEgA=";
+  };
+
+  build-system = [
+    ctypesgen
+    setuptools-scm
+  ];
+
+  propagatedBuildInputs = [
+    pdfium-binaries
+  ];
+
+  # Build system insists on fetching from the internet unless "cached" files
+  # are prepared. Even then, some code patching needs to happen to make it not
+  # talk to the internet.
+
+  # The project doesn't seem very open to allow for offline building either,
+  # see: https://github.com/pypdfium2-team/pypdfium2/discussions/274
+  preBuild =
+    let
+      pdfiumLib = lib.makeLibraryPath [ pdfium-binaries ];
+      inputVersionFile = (pkgs.formats.json { }).generate "version.json" {
+        version = lib.strings.toInt pdfiumVersion;
+        source = "generated";
+        flags = [ ];
+        run_lds = [ pdfiumLib ];
+        guard_symbols = false;
+      };
+      bindingsDir = "data/bindings";
+      headersDir = "${bindingsDir}/headers";
+      versionFile = "${bindingsDir}/version.json";
+    in
+    ''
+      # Preseed the headers and version file
+      mkdir -p ${headersDir}
+      tar -xf ${headers} -C ${headersDir}
+      install -m 644 ${inputVersionFile} ${versionFile}
+
+      # Make generated bindings consider pdfium derivation path when loading dynamic libraries
+      substituteInPlace setupsrc/pypdfium2_setup/emplace.py \
+        --replace-fail 'build_pdfium_bindings(pdfium_ver, flags=flags, guard_symbols=True, run_lds=[])' \
+                       'build_pdfium_bindings(pdfium_ver, flags=flags, guard_symbols=True, run_lds=["${pdfiumLib}"])'
+
+      # Short circuit the version pull from the internet
+      substituteInPlace setupsrc/pypdfium2_setup/packaging_base.py \
+        --replace-fail 'PdfiumVer.to_full(build)._asdict()' \
+                       '{"major": 133, "minor": 0, "build": ${pdfiumVersion}, "patch": 1}'
+    '';
+  env.PDFIUM_PLATFORM = "system:${pdfiumVersion}";
+
+  nativeCheckInputs = [
+    numpy
+    pillow
+    pytestCheckHook
+  ];
+
+  pythonImportsCheck = [
+    "pypdfium2"
+  ];
+
+  meta = {
+    changelog = "https://github.com/pypdfium2-team/pypdfium2/releases/tag/${version}";
+    description = "Python bindings to PDFium";
+    homepage = "https://pypdfium2.readthedocs.io/";
+    license = with lib.licenses; [
+      asl20 # or
+      mit
+    ];
+    maintainers = with lib.maintainers; [ booxter ];
+  };
+}
@@ -12363,6 +12363,8 @@ self: super: with self; {

  pypdf3 = callPackage ../development/python-modules/pypdf3 { };

+  pypdfium2 = callPackage ../development/python-modules/pypdfium2 { };
+
  pypeg2 = callPackage ../development/python-modules/pypeg2 { };

  pyperclip = callPackage ../development/python-modules/pyperclip { };