yosys: 2020.02.25 -> 2020.03.16

- Bump `abc-verifier` (2020.03.05)
  - Install `yosys-abc` symlink for tool compatbility
  - Various `yosys` expression cleanups

Signed-off-by: Austin Seipp <aseipp@pobox.com>

pkgs/applications/science/logic/abc/default.nix

@@ -1,35 +1,32 @@
-{ fetchFromGitHub, stdenv, readline, cmake }:
+{ stdenv, fetchFromGitHub
+, readline, cmake
+}:
 
-let
-  rev = "71f2b40320127561175ad60f6f2428f3438e5243";
-in stdenv.mkDerivation {
-  pname = "abc-verifier";
-  version = "2020-01-11";
+stdenv.mkDerivation rec {
+  pname   = "abc-verifier";
+  version = "2020.03.05";
 
   src = fetchFromGitHub {
-    inherit rev;
-    owner = "berkeley-abc";
-    repo = "abc";
-    sha256 = "15sn146ajxql7l1h8rsag5lhn4spwvgjhwzqawfr78snzadw8by3";
+    owner  = "berkeley-abc";
+    repo   = "abc";
+    rev    = "ed90ce20df9c7c4d6e1db5d3f786f9b52e06bab1";
+    sha256 = "01sw67pkrb6wzflkxbkxzwsnli3nvp0yxwp3j1ngb3c0j86ri437";
   };
 
-  passthru.rev = rev;
-
   nativeBuildInputs = [ cmake ];
   buildInputs = [ readline ];
 
   enableParallelBuilding = true;
+  installPhase = "mkdir -p $out/bin && mv abc $out/bin";
 
-  installPhase = ''
-    mkdir -p $out/bin
-    mv abc $out/bin
-  '';
+  # needed by yosys
+  passthru.rev = src.rev;
 
-  meta = {
+  meta = with stdenv.lib; {
     description = "A tool for squential logic synthesis and formal verification";
-    homepage    = https://people.eecs.berkeley.edu/~alanmi/abc;
-    license     = stdenv.lib.licenses.mit;
-    platforms   = stdenv.lib.platforms.unix;
-    maintainers = [ stdenv.lib.maintainers.thoughtpolice ];
+    homepage    = "https://people.eecs.berkeley.edu/~alanmi/abc";
+    license     = licenses.mit;
+    platforms   = platforms.unix;
+    maintainers = with maintainers; [ thoughtpolice ];
   };
 }