requirements: added pygit2 into project

pkgs/overlays.nix

@@ -1,4 +1,5 b''
 self: super: {
+
   # bump GIT version
   git = super.lib.overrideDerivation super.git (oldAttrs: {
     name = "git-2.19.2";
@@ -18,6 +19,29 b' self: super: {'
 
   });
 
+  libgit2rc = super.lib.overrideDerivation super.libgit2 (oldAttrs: {
+    name = "libgit2-0.28.2";
+    version = "0.28.2";
+
+    src = self.fetchFromGitHub {
+        owner = "libgit2";
+        repo = "libgit2";
+        rev = "v0.28.2";
+        sha256 = "0cm8fvs05rj0baigs2133q5a0sm3pa234y8h6hmwhl2bz9xq3k4b";
+    };
+
+    cmakeFlags = [ "-DTHREADSAFE=ON" "-DUSE_HTTPS=no"];
+
+    buildInputs = [
+        super.zlib
+        super.libssh2
+        super.openssl
+        super.curl
+    ];
+
+
+  });
+
   # Override subversion derivation to
   #  - activate python bindings
   subversion =
@@ -41,7 +65,7 b' self: super: {'
         " --with-utf8proc=internal"
       ];
 
-
   });
 
+
 }

pkgs/python-packages-overrides.nix

@@ -15,6 +15,12 b' in'
 
 self: super: {
 
+  "cffi" = super."cffi".override (attrs: {
+    buildInputs = [
+      pkgs.libffi
+    ];
+  });
+
   "gevent" = super."gevent".override (attrs: {
     propagatedBuildInputs = attrs.propagatedBuildInputs ++ [
       # NOTE: (marcink) odd requirements from gevent aren't set properly,
@@ -52,6 +58,12 b' self: super: {'
     ];
   });
 
+  "pygit2" = super."pygit2".override (attrs: {
+    propagatedBuildInputs = attrs.propagatedBuildInputs ++ [
+      pkgs.libffi
+      pkgs.libgit2rc
+    ];
+  });
 
   # Avoid that base packages screw up the build process
   inherit (basePythonPackages)

pkgs/python-packages.nix

@@ -48,6 +48,20 b' self: super: {'
       license = [ pkgs.lib.licenses.mit ];
     };
   };
+  "cffi" = super.buildPythonPackage {
+    name = "cffi-1.12.3";
+    doCheck = false;
+    propagatedBuildInputs = [
+      self."pycparser"
+    ];
+    src = fetchurl {
+      url = "https://files.pythonhosted.org/packages/93/1a/ab8c62b5838722f29f3daffcc8d4bd61844aa9b5f437341cc890ceee483b/cffi-1.12.3.tar.gz";
+      sha256 = "0x075521fxwv0mfp4cqzk7lvmw4n94bjw601qkcv314z5s182704";
+    };
+    meta = {
+      license = [ pkgs.lib.licenses.mit ];
+    };
+  };
   "configobj" = super.buildPythonPackage {
     name = "configobj-5.0.6";
     doCheck = false;
@@ -504,6 +518,32 b' self: super: {'
       license = [ pkgs.lib.licenses.mit ];
     };
   };
+  "pycparser" = super.buildPythonPackage {
+    name = "pycparser-2.19";
+    doCheck = false;
+    src = fetchurl {
+      url = "https://files.pythonhosted.org/packages/68/9e/49196946aee219aead1290e00d1e7fdeab8567783e83e1b9ab5585e6206a/pycparser-2.19.tar.gz";
+      sha256 = "1cr5dcj9628lkz1qlwq3fv97c25363qppkmcayqvd05dpy573259";
+    };
+    meta = {
+      license = [ pkgs.lib.licenses.bsdOriginal ];
+    };
+  };
+  "pygit2" = super.buildPythonPackage {
+    name = "pygit2-0.28.2";
+    doCheck = false;
+    propagatedBuildInputs = [
+      self."cffi"
+      self."six"
+    ];
+    src = fetchurl {
+      url = "https://files.pythonhosted.org/packages/4c/64/88c2a4eb2d22ca1982b364f41ff5da42d61de791d7eb68140e7f8f7eb721/pygit2-0.28.2.tar.gz";
+      sha256 = "11kzj5mjkspvplnpdb6bj8dcj6rgmkk986k8hjcklyg5yaxkz32d";
+    };
+    meta = {
+      license = [ { fullName = "GPLv2 with linking exception"; } ];
+    };
+  };
   "pygments" = super.buildPythonPackage {
     name = "pygments-2.4.2";
     doCheck = false;
@@ -691,6 +731,7 b' self: super: {'
       self."pastedeploy"
       self."pyramid"
       self."pyramid-mako"
+      self."pygit2"
       self."repoze.lru"
       self."simplejson"
       self."subprocess32"

pkgs/shell-generate.nix

@@ -23,6 +23,7 b' pkgs.stdenv.mkDerivation {'
     pythonPackages.pip-tools
     pkgs.apr
     pkgs.aprutil
+    pkgs.libffi
   ];
 
   shellHook = ''

requirements.txt

@@ -17,6 +17,7 b' msgpack-python==0.5.6'
 pastedeploy==2.0.1
 pyramid==1.10.4
 pyramid-mako==1.0.2
+pygit2==0.28.2
 
 repoze.lru==0.7
 simplejson==3.16.0