pythonPackages.pyinsane2: refactor move to python-modules

pkgs/development/python-modules/pyinsane2/default.nix

@@ -0,0 +1,45 @@
+{ stdenv
+, buildPythonPackage
+, fetchPypi
+, nose
+, pillow
+, pkgs
+}:
+
+buildPythonPackage rec {
+  pname = "pyinsane2";
+  version = "2.0.10";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "00d1wqb3w9bn1rxb2dwmdqbar2lr96izq855l5vzprc17dkgip3j";
+  };
+
+  # This is needed by setup.py regardless of whether tests are enabled.
+  buildInputs = [ nose ];
+  propagatedBuildInputs = [ pillow ];
+
+  postPatch = ''
+    # pyinsane2 forks itself, so we need to re-inject the PYTHONPATH.
+    sed -i -e '/os.putenv.*PYINSANE_DAEMON/ {
+      a \        os.putenv("PYTHONPATH", ":".join(sys.path))
+    }' pyinsane2/sane/abstract_proc.py
+
+    sed -i -e 's,"libsane.so.1","${pkgs.sane-backends}/lib/libsane.so",' \
+      pyinsane2/sane/rawapi.py
+  '';
+
+  # Tests require a scanner to be physically connected, so let's just do a
+  # quick check whether initialization works.
+  checkPhase = ''
+    python -c 'import pyinsane2; pyinsane2.init()'
+  '';
+
+  meta = with stdenv.lib; {
+    homepage = "https://github.com/jflesch/pyinsane";
+    description = "Access and use image scanners";
+    license = licenses.gpl3Plus;
+    platforms = platforms.linux;
+  };
+
+}