diff --git a/pkgs/applications/science/electronics/systemc/default.nix b/pkgs/applications/science/electronics/systemc/default.nix
index cdb489c6323b..dc6186841f47 100644
--- a/pkgs/applications/science/electronics/systemc/default.nix
+++ b/pkgs/applications/science/electronics/systemc/default.nix
@@ -1,18 +1,26 @@
-{ lib, stdenv, fetchurl }:
+{ lib, stdenv, fetchFromGitHub, autoreconfHook }:
 
 stdenv.mkDerivation rec {
   pname = "systemc";
-  version = "2.3.3";
+  version = "2.3.4";
 
-  src = fetchurl {
-    url = "https://www.accellera.org/images/downloads/standards/systemc/${pname}-${version}.tar.gz";
-    sha256 = "5781b9a351e5afedabc37d145e5f7edec08f3fd5de00ffeb8fa1f3086b1f7b3f";
+  src = fetchFromGitHub {
+    owner = "accellera-official";
+    repo = pname;
+    rev = version;
+    sha256 = "0sj8wlkp68cjhmkd9c9lvm3lk3sckczpz7w9vby64inc1f9fnf0b";
   };
 
+  enableParallelBuilding = true;
+  nativeBuildInputs = [ autoreconfHook ];
+
+  configureFlags = [ "--with-unix-layout" ];
+
   meta = with lib; {
     description = "The language for System-level design, modeling and verification";
     homepage    = "https://systemc.org/";
     license     = licenses.asl20;
-    maintainers = with maintainers; [ victormignot ];
+    platforms   = platforms.linux;
+    maintainers = with maintainers; [ victormignot amiloradovsky ];
   };
 }
diff --git a/pkgs/applications/science/electronics/verilator/default.nix b/pkgs/applications/science/electronics/verilator/default.nix
index 8311bb758e4a..90601651e510 100644
--- a/pkgs/applications/science/electronics/verilator/default.nix
+++ b/pkgs/applications/science/electronics/verilator/default.nix
@@ -1,8 +1,6 @@
-{ lib, stdenv, fetchFromGitHub
-, perl, flex, bison, python3, autoconf
-, which, cmake, help2man
-, makeWrapper, glibcLocales
-}:
+{ lib, stdenv, fetchFromGitHub, perl, flex, bison, python3, autoconf,
+  which, cmake, ccache, help2man, makeWrapper, glibcLocales,
+  systemc, git, numactl }:
 
 stdenv.mkDerivation rec {
   pname = "verilator";
@@ -16,9 +14,9 @@ stdenv.mkDerivation rec {
   };
 
   enableParallelBuilding = true;
-  buildInputs = [ perl ];
-  nativeBuildInputs = [ makeWrapper flex bison python3 autoconf help2man ];
-  nativeCheckInputs = [ which ];
+  buildInputs = [ perl python3 systemc ];  # ccache
+  nativeBuildInputs = [ makeWrapper flex bison autoconf help2man git ];
+  nativeCheckInputs = [ which numactl ];  # cmake
 
   doCheck = stdenv.isLinux; # darwin tests are broken for now...
   checkTarget = "test";
@@ -26,8 +24,12 @@ stdenv.mkDerivation rec {
   preConfigure = "autoconf";
 
   postPatch = ''
-    patchShebangs bin/* src/{flexfix,vlcovgen} test_regress/{driver.pl,t/*.pl}
+    patchShebangs bin/* src/* nodist/* docs/bin/* examples/xml_py/* \
+    test_regress/{driver.pl,t/*.{pl,pf}} \
+    ci/* ci/docker/run/* ci/docker/run/hooks/* ci/docker/buildenv/build.sh
   '';
+  # grep '^#!/' -R . | grep -v /nix/store | less
+  # (in nix-shell after patchPhase)
 
   postInstall = lib.optionalString stdenv.isLinux ''
     for x in $(ls $out/bin/verilator*); do
@@ -36,10 +38,10 @@ stdenv.mkDerivation rec {
   '';
 
   meta = with lib; {
-    description = "Fast and robust (System)Verilog simulator/compiler";
-    homepage    = "https://www.veripool.org/wiki/verilator";
+    description = "Fast and robust (System)Verilog simulator/compiler and linter";
+    homepage    = "https://www.veripool.org/verilator";
     license     = with licenses; [ lgpl3Only artistic2 ];
     platforms   = platforms.unix;
-    maintainers = with maintainers; [ thoughtpolice ];
+    maintainers = with maintainers; [ thoughtpolice amiloradovsky ];
   };
 }