diff --git a/pkgs/development/python-modules/pyro4/default.nix b/pkgs/development/python-modules/pyro4/default.nix
index c5211162c65..508722e70fb 100644
--- a/pkgs/development/python-modules/pyro4/default.nix
+++ b/pkgs/development/python-modules/pyro4/default.nix
@@ -37,9 +37,7 @@ buildPythonPackage rec {
   preCheck = "PYTHONPATH=tests/PyroTests:$PYTHONPATH";
 
   # ignore network related tests, which fail in sandbox
-  pytestFlagsArray = [ "--ignore=tests/PyroTests/test_naming.py" ]
-    # test hangs on darwin with sandbox enabled
-    ++ lib.optionals stdenv.isDarwin [ "--ignore=tests/PyroTests/test_daemon.py" ];
+  pytestFlagsArray = [ "--ignore=tests/PyroTests/test_naming.py" ];
 
   disabledTests = [
     "StartNSfunc"
@@ -47,6 +45,9 @@ buildPythonPackage rec {
     "GetIP"
   ];
 
+  # otherwise the tests hang the build
+  __darwinAllowLocalNetworking = true;
+
   meta = with stdenv.lib; {
     description = "Distributed object middleware for Python (RPC)";
     homepage = "https://github.com/irmen/Pyro4";
diff --git a/pkgs/servers/irc/solanum/default.nix b/pkgs/servers/irc/solanum/default.nix
new file mode 100644
index 00000000000..9455929e3be
--- /dev/null
+++ b/pkgs/servers/irc/solanum/default.nix
@@ -0,0 +1,60 @@
+{ stdenv
+, fetchFromGitHub
+, autoreconfHook
+, pkg-config
+, bison
+, flex
+, openssl
+, sqlite
+, lksctp-tools
+}:
+
+stdenv.mkDerivation rec {
+  pname = "solanum";
+  version = "unstable-2020-12-14";
+
+  src = fetchFromGitHub {
+    owner = "solanum-ircd";
+    repo = pname;
+    rev = "551e5a146eab4948ce4a57d87a7f671f2d7cc02d";
+    sha256 = "14cd2cb04w6nwck7q49jw5zvifkzhkmblwhjfskc2nxcdb5x3l96";
+  };
+
+  patches = [
+    ./dont-create-logdir.patch
+  ];
+
+  configureFlags = [
+    "--enable-epoll"
+    "--enable-ipv6"
+    "--enable-openssl=${openssl.dev}"
+    "--with-program-prefix=solanum-"
+    "--localstatedir=/var/lib/solanum"
+    "--with-rundir=/run/solanum"
+    "--with-logdir=/var/log/solanum"
+  ] ++ stdenv.lib.optionals (stdenv.isLinux) [
+    "--enable-sctp=${lksctp-tools.out}/lib"
+  ];
+
+  nativeBuildInputs = [
+    autoreconfHook
+    bison
+    flex
+    pkg-config
+  ];
+
+  buildInputs = [
+    openssl
+    sqlite
+  ];
+
+  doCheck = !stdenv.isDarwin;
+
+  meta = with stdenv.lib; {
+    description = "An IRCd for unified networks";
+    homepage = "https://github.com/solanum-ircd/solanum";
+    license = licenses.gpl2Only;
+    maintainers = with maintainers; [ hexa ];
+    platforms = platforms.unix;
+  };
+}
diff --git a/pkgs/servers/irc/solanum/dont-create-logdir.patch b/pkgs/servers/irc/solanum/dont-create-logdir.patch
new file mode 100644
index 00000000000..e348dd7b85b
--- /dev/null
+++ b/pkgs/servers/irc/solanum/dont-create-logdir.patch
@@ -0,0 +1,14 @@
+diff --git a/Makefile.am b/Makefile.am
+index 19e7b396..21093521 100644
+--- a/Makefile.am
++++ b/Makefile.am
+@@ -35,9 +35,6 @@ include/serno.h:
+ 		echo '#define DATECODE 0UL' >>include/serno.h; \
+ 	fi
+ 
+-install-data-hook:
+-	test -d ${DESTDIR}${logdir} || mkdir -p ${DESTDIR}${logdir}
+-
+ install-exec-hook:
+ 	rm -f ${DESTDIR}${libdir}/*.la
+ 	rm -f ${DESTDIR}${moduledir}/*.la
diff --git a/pkgs/shells/zsh/oh-my-zsh/default.nix b/pkgs/shells/zsh/oh-my-zsh/default.nix
index 1a27770767d..aabc0c6e05c 100644
--- a/pkgs/shells/zsh/oh-my-zsh/default.nix
+++ b/pkgs/shells/zsh/oh-my-zsh/default.nix
@@ -5,15 +5,15 @@
 , nix, nixfmt, jq, coreutils, gnused, curl, cacert }:
 
 stdenv.mkDerivation rec {
-  version = "2021-01-01";
+  version = "2021-01-02";
   pname = "oh-my-zsh";
-  rev = "0f6aa0182c8d13a2ff909b650d790f83373dc412";
+  rev = "0e833b622ba43d38bd62227244d831f3c0e4a325";
 
   src = fetchFromGitHub {
     inherit rev;
     owner = "ohmyzsh";
     repo = "ohmyzsh";
-    sha256 = "HZmomTPS9k1aKgSibdZfF6BxTsLAYTmBx9Gx5T3Circ=";
+    sha256 = "06bmlc8lzqxs37glwmv7j0yk73kccmrdb783kvqldski56004gba";
   };
 
   installPhase = ''
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 922141559d4..da7340eb7bd 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -7560,6 +7560,8 @@ in
 
   solaar = callPackage ../applications/misc/solaar {};
 
+  solanum = callPackage ../servers/irc/solanum {};
+
   sourceHighlight = callPackage ../tools/text/source-highlight { };
 
   spacebar = callPackage ../os-specific/darwin/spacebar {