first commit

default.nix

@@ -0,0 +1,13 @@
+{ nixpkgs ? import <nixpkgs> {
+} }:
+
+let
+  inherit (nixpkgs) pkgs;
+in
+
+pkgs.stdenv.mkDerivation {
+  name = "example-project";
+  buildInputs = with pkgs; [
+    (python3.withPackages (ppkgs: with ppkgs; [ (callPackage ./nix/kivy/default.nix {}) ]))
+  ];
+}

nix/kivy/bork.nix

@@ -0,0 +1,101 @@
+{ stdenv, buildPythonPackage, fetchPypi, maintainers, platforms, licenses, pkgs }:
+
+# From the 1.10.0 documentation:
+# "This version of Kivy requires at least Cython version 0.23, and has been
+# tested through 0.25.2. Later versions may work, but as they have not been
+# tested there is no guarantee."
+
+assert stdenv.lib.versionAtLeast pkgs.cython.version "0.23";
+
+# Rather than depending on a specific older version of Cython, we accept the
+# off-chance of breakage:
+# assert stdenv.lib.versionOlder self.cython.version "0.25.3";
+
+buildPythonPackage rec {
+  pname = "Kivy";
+  version = "1.10.0";
+  name = "${pname}-${version}";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "1394zh6kvf7k5d8vlzxcsfcailr3q59xwg9b1n7qaf25bvyq1h98";
+  };
+
+  # setup.py invokes git on build but we're fetching a tarball, so
+  # can't retrieve git version. We remove the git-invocation from setup.py
+  # This patch can presumably be removed on the next version of Kivy, because the problem
+  # was addressed in https://github.com/kivy/kivy/issues/5365
+  patches = [
+    ./setup.py.patch
+  ];
+
+  buildInputs = with pkgs; [
+    pkgconfig
+    cython
+
+    #kivygarden  # See https://github.com/kivy/kivy/issues/5367 suggestion I-2
+    requests  # See https://github.com/kivy/kivy/issues/5367 suggestion I-3
+    docutils # See https://github.com/kivy/kivy/issues/5367 question Q-5
+    pygments # See https://github.com/kivy/kivy/issues/5367 question Q-6
+
+    # nose  # needed for tests (which are currently disabled)
+
+    # The setup below is, as much as I can figure out how to make it, an attempt
+    # to create a "canonical full install" of Kivy on linux, as allued to in
+    # https://github.com/kivy/kivy/issues/5367 question Q-7
+
+    # Some sources to reconstruct such a thing are:
+    # .travis.yml (which contains the actual build instructions for CI)
+    # https://kivy.org/docs/installation/installation.html
+    # https://kivy.org/docs/installation/installation-linux.html
+
+    pkgs.mesa
+    pkgs.mtdev
+
+    pkgs.SDL2
+    pkgs.SDL2_image
+    pkgs.SDL2_ttf
+    pkgs.SDL2_mixer
+
+    # NOTE: The degree to which gstreamer actually works is unclear
+    pkgs.gst_all_1.gstreamer
+    pkgs.gst_all_1.gst-plugins-base
+    pkgs.gst_all_1.gst-plugins-good
+    pkgs.gst_all_1.gst-plugins-bad
+
+    # Not done yet:
+    # "Camera is also unclear in the cross-platform sense, though for a
+    # canonical linux configuration the answer is probably opencv. SDL2 for
+    # image provider qualifies as "canonical", though it is my impression that
+    # ffpyplayer has wider and better format support."
+    ];
+
+  propagatedBuildInputs = with pkgs; [
+    pillow
+    ] ;
+
+  # We're not currently running tests, because there are 38 errors and 1 failure
+  # This number may be reduced somewhat once https://github.com/kivy/kivy/issues/5373 is fixed
+
+  # KIVY_NO_CONFIG is needed, because otherwise tests attempt to write to the non-existing $HOME
+  # checkPhase = ''
+  #   export KIVY_NO_CONFIG=1
+  #   nosetests
+  # '';
+
+  doCheck = false;
+
+  postPatch = ''
+   substituteInPlace kivy/lib/mtdev.py \
+     --replace "LoadLibrary('libmtdev.so.1')" "LoadLibrary('${pkgs.mtdev}/lib/libmtdev.so.1')"
+  '';
+
+  meta = {
+    description = "A software library for rapid development of hardware-accelerated multitouch applications.";
+    homepage    = "https://pypi.python.org/pypi/kivy";
+    license     = licenses.mit;
+    maintainers = with maintainers; [ vanschelven ];
+    platforms   = platforms.unix;  # I can only test linux; in principle other platforms are supported
+  };
+
+}

nix/kivy/default.nix

@@ -0,0 +1,100 @@
+{ stdenv, buildPythonPackage, fetchPypi, pkgs, self }:
+
+# From the 1.10.0 documentation:
+# "This version of Kivy requires at least Cython version 0.23, and has been
+# tested through 0.25.2. Later versions may work, but as they have not been
+# tested there is no guarantee."
+
+assert stdenv.lib.versionAtLeast self.cython.version "0.23";
+
+# Rather than depending on a specific older version of Cython, we accept the
+# off-chance of breakage:
+# assert stdenv.lib.versionOlder self.cython.version "0.25.3";
+
+buildPythonPackage rec {
+  pname = "Kivy";
+  version = "1.10.0";
+  name = "${pname}-${version}";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "1394zh6kvf7k5d8vlzxcsfcailr3q59xwg9b1n7qaf25bvyq1h98";
+  };
+
+  # setup.py invokes git on build but we're fetching a tarball, so
+  # can't retrieve git version. We remove the git-invocation from setup.py
+  # This patch can presumably be removed on the next version of Kivy, because the problem
+  # was addressed in https://github.com/kivy/kivy/issues/5365
+  patches = [
+    ./setup.py.patch
+  ];
+
+  buildInputs = with self; [
+    pkgconfig
+    cython
+
+    kivygarden  # See https://github.com/kivy/kivy/issues/5367 suggestion I-2
+    requests  # See https://github.com/kivy/kivy/issues/5367 suggestion I-3
+    docutils # See https://github.com/kivy/kivy/issues/5367 question Q-5
+    pygments # See https://github.com/kivy/kivy/issues/5367 question Q-6
+
+    # nose  # needed for tests (which are currently disabled)
+
+    # The setup below is, as much as I can figure out how to make it, an attempt
+    # to create a "canonical full install" of Kivy on linux, as allued to in
+    # https://github.com/kivy/kivy/issues/5367 question Q-7
+
+    # Some sources to reconstruct such a thing are:
+    # .travis.yml (which contains the actual build instructions for CI)
+    # https://kivy.org/docs/installation/installation.html
+    # https://kivy.org/docs/installation/installation-linux.html
+
+    pkgs.mesa
+    pkgs.mtdev
+
+    pkgs.SDL2
+    pkgs.SDL2_image
+    pkgs.SDL2_ttf
+    pkgs.SDL2_mixer
+
+    # NOTE: The degree to which gstreamer actually works is unclear
+    pkgs.gst_all_1.gstreamer
+    pkgs.gst_all_1.gst-plugins-base
+    pkgs.gst_all_1.gst-plugins-good
+    pkgs.gst_all_1.gst-plugins-bad
+
+    # Not done yet:
+    # "Camera is also unclear in the cross-platform sense, though for a
+    # canonical linux configuration the answer is probably opencv. SDL2 for
+    # image provider qualifies as "canonical", though it is my impression that
+    # ffpyplayer has wider and better format support."
+    ];
+
+  propagatedBuildInputs = with self; [
+    pillow
+    ] ;
+
+  # We're not currently running tests, because there are 38 errors and 1 failure
+  # This number may be reduced somewhat once https://github.com/kivy/kivy/issues/5373 is fixed
+
+  # KIVY_NO_CONFIG is needed, because otherwise tests attempt to write to the non-existing $HOME
+  # checkPhase = ''
+  #   export KIVY_NO_CONFIG=1
+  #   nosetests
+  # '';
+
+  doCheck = false;
+
+  postPatch = ''
+   substituteInPlace kivy/lib/mtdev.py \
+     --replace "LoadLibrary('libmtdev.so.1')" "LoadLibrary('${pkgs.mtdev}/lib/libmtdev.so.1')"
+  '';
+
+  meta = with stdenv.lib; {
+    description = "A software library for rapid development of hardware-accelerated multitouch applications.";
+    homepage    = "https://pypi.python.org/pypi/kivy";
+    license     = licenses.mit;
+    maintainers = with maintainers; [ vanschelven ];
+    platforms   = platforms.unix;  # I can only test linux; in principle other platforms are supported
+  };
+}

nix/kivy/setup.py.patch

@@ -0,0 +1,16 @@
+--- Kivy-1.10.0/setup.py	2017-05-07 17:24:57.000000000 +0200
++++ setup.py	2017-09-04 14:27:13.222721223 +0200
+@@ -42,12 +42,7 @@
+ def get_version(filename='kivy/version.py'):
+     VERSION = kivy.__version__
+     DATE = datetime.utcnow().strftime('%Y%m%d')
+-    try:
+-        GIT_REVISION = check_output(
+-            ['git', 'rev-parse', 'HEAD']
+-        ).strip().decode('ascii')
+-    except CalledProcessError:
+-        GIT_REVISION = "Unknown"
++    GIT_REVISION = "Unknown"
+ 
+     cnt = (
+         "# THIS FILE IS GENERATED FROM KIVY SETUP.PY\n"