pythonPackages.cairocffi: support 1.0 and 0.9

This patch ensures that Python2 can be used if cairocffi is used.
Version 1.0 dropped Python 2 support.

pkgs/development/python-modules/cairocffi/default.nix

@@ -1,12 +1,14 @@
 # FIXME: make gdk_pixbuf dependency optional
 { stdenv
 , buildPythonPackage
+, pythonOlder
 , fetchPypi
 , lib
 , substituteAll
 , makeFontsConf
 , freefont_ttf
 , pytest
+, pytestrunner
 , glibcLocales
 , cairo
 , cffi
@@ -15,46 +17,62 @@
 , glib
 , gdk_pixbuf }:
 
-buildPythonPackage rec {
-  pname = "cairocffi";
-  version = "1.0.2";
+let
+  generic = { version, sha256, dlopen_patch, disabled ? false }:
+    buildPythonPackage rec {
+      pname = "cairocffi";
+      inherit version disabled;
 
-  src = fetchPypi {
-    inherit pname version;
-    sha256 = "01ac51ae12c4324ca5809ce270f9dd1b67f5166fe63bd3e497e9ea3ca91946ff";
-  };
+      src = fetchPypi {
+        inherit pname version sha256;
+      };
 
-  LC_ALL = "en_US.UTF-8";
+      LC_ALL = "en_US.UTF-8";
 
-  # checkPhase require at least one 'normal' font and one 'monospace',
-  # otherwise glyph tests fails
-  FONTCONFIG_FILE = makeFontsConf {
-    fontDirectories = [ freefont_ttf ];
-  };
+      # checkPhase require at least one 'normal' font and one 'monospace',
+      # otherwise glyph tests fails
+      FONTCONFIG_FILE = makeFontsConf {
+        fontDirectories = [ freefont_ttf ];
+      };
 
-  checkInputs = [ pytest glibcLocales ];
-  propagatedBuildInputs = [ cairo cffi ] ++ lib.optional withXcffib xcffib;
+      checkInputs = [ pytest pytestrunner glibcLocales ];
+      propagatedBuildInputs = [ cairo cffi ] ++ lib.optional withXcffib xcffib;
 
-  checkPhase = ''
-    py.test $out/${python.sitePackages}
-  '';
+      checkPhase = ''
+        py.test $out/${python.sitePackages}
+      '';
 
-  patches = [
-    # OSError: dlopen() failed to load a library: gdk_pixbuf-2.0 / gdk_pixbuf-2.0-0
-    (substituteAll {
-      src = ./dlopen-paths.patch;
-      ext = stdenv.hostPlatform.extensions.sharedLibrary;
-      cairo = cairo.out;
-      glib = glib.out;
-      gdk_pixbuf = gdk_pixbuf.out;
-    })
-    ./fix_test_scaled_font.patch
-  ];
+      patches = [
+        # OSError: dlopen() failed to load a library: gdk_pixbuf-2.0 / gdk_pixbuf-2.0-0
+        (substituteAll {
+          src = dlopen_patch;
+          ext = stdenv.hostPlatform.extensions.sharedLibrary;
+          cairo = cairo.out;
+          glib = glib.out;
+          gdk_pixbuf = gdk_pixbuf.out;
+        })
+        ./fix_test_scaled_font.patch
+      ];
 
-  meta = with lib; {
-    homepage = https://github.com/SimonSapin/cairocffi;
-    license = licenses.bsd3;
-    maintainers = with maintainers; [];
-    description = "cffi-based cairo bindings for Python";
-  };
-}
+      meta = with lib; {
+        homepage = https://github.com/SimonSapin/cairocffi;
+        license = licenses.bsd3;
+        maintainers = with maintainers; [];
+        description = "cffi-based cairo bindings for Python";
+      };
+    };
+in
+  {
+    cairocffi_1_0 = generic {
+      version = "1.0.2";
+      sha256 = "01ac51ae12c4324ca5809ce270f9dd1b67f5166fe63bd3e497e9ea3ca91946ff";
+      dlopen_patch = ./dlopen-paths.patch;
+      disabled = pythonOlder "3.5";
+    };
+
+    cairocffi_0_9 = generic {
+      version = "0.9.0";
+      sha256 = "15386c3a9e08823d6826c4491eaccc7b7254b1dc587a3b9ce60c350c3f990337";
+      dlopen_patch = ./dlopen-paths-0.9.patch;
+    };
+  }

pkgs/development/python-modules/cairocffi/dlopen-paths-0.9.patch

@@ -0,0 +1,47 @@
+commit 705dc9a55bd160625d9996e63fc7dc532d0ad0ab
+Author: Alexander V. Nikolaev <avn@avnik.info>
+Date:   Sat Feb 6 08:09:06 2016 +0200
+
+    Patch dlopen() to allow direct paths to all required libs
+    
+    This patch is NixOS specific
+
+diff --git a/cairocffi/__init__.py b/cairocffi/__init__.py
+index 718aa7f..1a1dcff 100644
+--- a/cairocffi/__init__.py
++++ b/cairocffi/__init__.py
+@@ -27,20 +27,22 @@ VERSION = '0.7.2'
+ version = '1.10.0'
+ version_info = (1, 10, 0)
+ 
++# Use hardcoded soname, because ctypes.util use gcc/objdump which shouldn't be required for runtime
++_LIBS = {
++    'cairo': '@cairo@/lib/libcairo@ext@',
++    'glib-2.0': '@glib@/lib/libglib-2.0@ext@',
++    'gobject-2.0': '@glib@/lib/libgobject-2.0@ext@',
++    'gdk_pixbuf-2.0': '@gdk_pixbuf@/lib/libgdk_pixbuf-2.0@ext@',
++}
+ 
+-def dlopen(ffi, *names):
++def dlopen(ffi, name, *names):
+     """Try various names for the same library, for different platforms."""
+-    for name in names:
+-        for lib_name in [name, 'lib' + name]:
+-            try:
+-                path = ctypes.util.find_library(lib_name)
+-                if path:
+-                    lib = ffi.dlopen(path)
+-                    if lib:
+-                        return lib
+-            except OSError:
+-                pass
+-    raise OSError("dlopen() failed to load a library: %s" % ' / '.join(names))
++    path = _LIBS.get(name, None)
++    if path:
++        lib = ffi.dlopen(path)
++        if lib:
++            return lib
++    raise OSError("dlopen() failed to load a library: %s as %s" % (name, path))
+ 
+ 
+ cairo = dlopen(ffi, 'cairo', 'cairo-2')

pkgs/development/python-modules/cairocffi/dlopen-paths.patch

@@ -1,4 +1,4 @@
-commit 705dc9a55bd160625d9996e63fc7dc532d0ad0ab
+commit 0435bc2577d4b18f54b78b2f5185abb2b2005982
 Author: Alexander V. Nikolaev <avn@avnik.info>
 Date:   Sat Feb 6 08:09:06 2016 +0200
 
@@ -7,12 +7,12 @@ Date:   Sat Feb 6 08:09:06 2016 +0200
     This patch is NixOS specific
 
 diff --git a/cairocffi/__init__.py b/cairocffi/__init__.py
-index 718aa7f..1a1dcff 100644
+index 6061973..3538a58 100644
 --- a/cairocffi/__init__.py
 +++ b/cairocffi/__init__.py
-@@ -27,20 +27,22 @@ VERSION = '0.7.2'
- version = '1.10.0'
- version_info = (1, 10, 0)
+@@ -21,19 +21,22 @@ VERSION = __version__ = (Path(__file__).parent / 'VERSION').read_text().strip()
+ version = '1.16.0'
+ version_info = (1, 16, 0)
  
 +# Use hardcoded soname, because ctypes.util use gcc/objdump which shouldn't be required for runtime
 +_LIBS = {
@@ -26,13 +26,12 @@ index 718aa7f..1a1dcff 100644
 +def dlopen(ffi, name, *names):
      """Try various names for the same library, for different platforms."""
 -    for name in names:
--        for lib_name in [name, 'lib' + name]:
+-        for lib_name in (name, 'lib' + name):
 -            try:
 -                path = ctypes.util.find_library(lib_name)
--                if path:
--                    lib = ffi.dlopen(path)
--                    if lib:
--                        return lib
+-                lib = ffi.dlopen(path or lib_name)
+-                if lib:
+-                    return lib
 -            except OSError:
 -                pass
 -    raise OSError("dlopen() failed to load a library: %s" % ' / '.join(names))
@@ -44,4 +43,4 @@ index 718aa7f..1a1dcff 100644
 +    raise OSError("dlopen() failed to load a library: %s as %s" % (name, path))
  
  
- cairo = dlopen(ffi, 'cairo', 'cairo-2')
+ cairo = dlopen(ffi, 'cairo', 'cairo-2', 'cairo-gobject-2', 'cairo.so.2')

pkgs/top-level/python-packages.nix

@@ -1311,7 +1311,10 @@ in {
 
   canmatrix = callPackage ../development/python-modules/canmatrix {};
 
-  cairocffi = callPackage ../development/python-modules/cairocffi {};
+
+  cairocffi = let
+    inherit (callPackage ../development/python-modules/cairocffi {}) cairocffi_1_0 cairocffi_0_9;
+  in if isPy3k then cairocffi_1_0 else cairocffi_0_9;
 
   cairosvg1 = callPackage ../development/python-modules/cairosvg/1_x.nix {};