From c485543c7c1aca6d32e755d5736c035ba13f5c5a Mon Sep 17 00:00:00 2001
From: Shell Turner <cam.turn@gmail.com>
Date: Tue, 29 Dec 2015 16:31:18 +0000
Subject: [PATCH] yosys: init at 2015.12.29

---
 pkgs/development/compilers/yosys/default.nix | 50 ++++++++++++++++++++
 pkgs/top-level/all-packages.nix              |  2 +
 2 files changed, 52 insertions(+)
 create mode 100644 pkgs/development/compilers/yosys/default.nix

diff --git a/pkgs/development/compilers/yosys/default.nix b/pkgs/development/compilers/yosys/default.nix
new file mode 100644
index 000000000000..cfaabb0a71a9
--- /dev/null
+++ b/pkgs/development/compilers/yosys/default.nix
@@ -0,0 +1,50 @@
+{ stdenv, fetchFromGitHub, fetchFromBitbucket, pkgconfig, tcl, readline, libffi, python3, bison, flex }:
+
+stdenv.mkDerivation rec {
+  name = "yosys-${version}";
+  version = "2015.12.29";
+
+  srcs = [
+    (fetchFromGitHub {
+      owner = "cliffordwolf";
+      repo = "yosys";
+      rev = "1d62f8710f04fec405ef79b9e9a4a031afcf7d42";
+      sha256 = "0q1dk9in3gmrihb58pjckncx56lj7y4b6y34jgb68f0fh91fdvfx";
+      name = "yosys";
+    })
+    (fetchFromBitbucket {
+      owner = "alanmi";
+      repo = "abc";
+      rev = "c3698e053a7a";
+      sha256 = "05p0fvbr7xvb6w3d7j2r6gynr3ljb6r5q6jvn2zs3ysn2b003qwd";
+      name = "abc";
+    })
+  ];
+  sourceRoot = "yosys";
+
+  buildInputs = [ pkgconfig tcl readline libffi python3 bison flex ];
+  preBuild = ''
+    chmod -R u+w ../abc
+    ln -s ../abc abc
+    make config-gcc
+    echo 'ABCREV := default' >> Makefile.conf
+    makeFlags="PREFIX=$out $makeFlags"
+  '';
+
+  meta = {
+    description = "Framework for RTL synthesis tools";
+    longDescription = ''
+      Yosys is a framework for RTL synthesis tools. It currently has
+      extensive Verilog-2005 support and provides a basic set of
+      synthesis algorithms for various application domains.
+
+      Yosys can be adapted to perform any synthesis job by combining
+      the existing passes (algorithms) using synthesis scripts and
+      adding additional passes as needed by extending the yosys C++
+      code base.
+    '';
+    homepage = http://www.clifford.at/yosys/;
+    license = stdenv.lib.licenses.isc;
+    maintainers = [ stdenv.lib.maintainers.shell ];
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 6c8ea3194020..d22600fd0eb3 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -5001,6 +5001,8 @@ let
 
   yasm = callPackage ../development/compilers/yasm { };
 
+  yosys = callPackage ../development/compilers/yosys { };
+
 
   ### DEVELOPMENT / INTERPRETERS