diff --git a/nixos/tests/all-tests.nix b/nixos/tests/all-tests.nix
index d746105ea643..fa14d829ff65 100644
--- a/nixos/tests/all-tests.nix
+++ b/nixos/tests/all-tests.nix
@@ -40,18 +40,18 @@ in
   bittorrent = handleTest ./bittorrent.nix {};
   bitwarden = handleTest ./bitwarden.nix {};
   blockbook-frontend = handleTest ./blockbook-frontend.nix {};
-  buildkite-agents = handleTest ./buildkite-agents.nix {};
   boot = handleTestOn ["x86_64-linux"] ./boot.nix {}; # syslinux is unsupported on aarch64
   boot-stage1 = handleTest ./boot-stage1.nix {};
   borgbackup = handleTest ./borgbackup.nix {};
   buildbot = handleTest ./buildbot.nix {};
+  buildkite-agents = handleTest ./buildkite-agents.nix {};
   caddy = handleTest ./caddy.nix {};
   cadvisor = handleTestOn ["x86_64-linux"] ./cadvisor.nix {};
   cage = handleTest ./cage.nix {};
   cagebreak = handleTest ./cagebreak.nix {};
   cassandra = handleTest ./cassandra.nix {};
-  ceph-single-node = handleTestOn ["x86_64-linux"] ./ceph-single-node.nix {};
   ceph-multi-node = handleTestOn ["x86_64-linux"] ./ceph-multi-node.nix {};
+  ceph-single-node = handleTestOn ["x86_64-linux"] ./ceph-single-node.nix {};
   certmgr = handleTest ./certmgr.nix {};
   cfssl = handleTestOn ["x86_64-linux"] ./cfssl.nix {};
   charliecloud = handleTest ./charliecloud.nix {};
@@ -59,9 +59,9 @@ in
   cjdns = handleTest ./cjdns.nix {};
   clickhouse = handleTest ./clickhouse.nix {};
   cloud-init = handleTest ./cloud-init.nix {};
+  cockroachdb = handleTestOn ["x86_64-linux"] ./cockroachdb.nix {};
   codimd = handleTest ./codimd.nix {};
   consul = handleTest ./consul.nix {};
-  cockroachdb = handleTestOn ["x86_64-linux"] ./cockroachdb.nix {};
   containers-bridge = handleTest ./containers-bridge.nix {};
   containers-custom-pkgs.nix = handleTest ./containers-custom-pkgs.nix {};
   containers-ephemeral = handleTest ./containers-ephemeral.nix {};
@@ -85,7 +85,6 @@ in
   dnscrypt-wrapper = handleTestOn ["x86_64-linux"] ./dnscrypt-wrapper {};
   doas = handleTest ./doas.nix {};
   docker = handleTestOn ["x86_64-linux"] ./docker.nix {};
-  oci-containers = handleTestOn ["x86_64-linux"] ./oci-containers.nix {};
   docker-edge = handleTestOn ["x86_64-linux"] ./docker-edge.nix {};
   docker-registry = handleTest ./docker-registry.nix {};
   docker-tools = handleTestOn ["x86_64-linux"] ./docker-tools.nix {};
@@ -119,24 +118,23 @@ in
   fsck = handleTest ./fsck.nix {};
   ft2-clone = handleTest ./ft2-clone.nix {};
   gerrit = handleTest ./gerrit.nix {};
-  gotify-server = handleTest ./gotify-server.nix {};
-  grocy = handleTest ./grocy.nix {};
   gitdaemon = handleTest ./gitdaemon.nix {};
   gitea = handleTest ./gitea.nix {};
   gitlab = handleTest ./gitlab.nix {};
   gitolite = handleTest ./gitolite.nix {};
   gitolite-fcgiwrap = handleTest ./gitolite-fcgiwrap.nix {};
   glusterfs = handleTest ./glusterfs.nix {};
-  gnome3-xorg = handleTest ./gnome3-xorg.nix {};
   gnome3 = handleTest ./gnome3.nix {};
-  installed-tests = pkgs.recurseIntoAttrs (handleTest ./installed-tests {});
+  gnome3-xorg = handleTest ./gnome3-xorg.nix {};
+  go-neb = handleTest ./go-neb.nix {};
   gocd-agent = handleTest ./gocd-agent.nix {};
   gocd-server = handleTest ./gocd-server.nix {};
-  go-neb = handleTest ./go-neb.nix {};
   google-oslogin = handleTest ./google-oslogin {};
+  gotify-server = handleTest ./gotify-server.nix {};
   grafana = handleTest ./grafana.nix {};
   graphite = handleTest ./graphite.nix {};
   graylog = handleTest ./graylog.nix {};
+  grocy = handleTest ./grocy.nix {};
   grub = handleTest ./grub.nix {};
   gvisor = handleTest ./gvisor.nix {};
   hadoop.hdfs = handleTestOn [ "x86_64-linux" ] ./hadoop/hdfs.nix {};
@@ -144,6 +142,8 @@ in
   handbrake = handleTestOn ["x86_64-linux"] ./handbrake.nix {};
   haproxy = handleTest ./haproxy.nix {};
   hardened = handleTest ./hardened.nix {};
+  installed-tests = pkgs.recurseIntoAttrs (handleTest ./installed-tests {});
+  oci-containers = handleTestOn ["x86_64-linux"] ./oci-containers.nix {};
   # 9pnet_virtio used to mount /nix partition doesn't support
   # hibernation. This test happens to work on x86_64-linux but
   # not on other platforms.
@@ -160,8 +160,8 @@ in
   ihatemoney = handleTest ./ihatemoney.nix {};
   incron = handleTest ./incron.nix {};
   influxdb = handleTest ./influxdb.nix {};
-  initrd-network-ssh = handleTest ./initrd-network-ssh {};
   initrd-network-openvpn = handleTest ./initrd-network-openvpn {};
+  initrd-network-ssh = handleTest ./initrd-network-ssh {};
   initrdNetwork = handleTest ./initrd-network.nix {};
   installer = handleTest ./installer.nix {};
   iodine = handleTest ./iodine.nix {};
@@ -201,8 +201,8 @@ in
   lxd-nftables = handleTest ./lxd-nftables.nix {};
   #logstash = handleTest ./logstash.nix {};
   lorri = handleTest ./lorri/default.nix {};
-  magnetico = handleTest ./magnetico.nix {};
   magic-wormhole-mailbox-server = handleTest ./magic-wormhole-mailbox-server.nix {};
+  magnetico = handleTest ./magnetico.nix {};
   mailcatcher = handleTest ./mailcatcher.nix {};
   mariadb-galera-mariabackup = handleTest ./mysql/mariadb-galera-mariabackup.nix {};
   mariadb-galera-rsync = handleTest ./mysql/mariadb-galera-rsync.nix {};
@@ -213,9 +213,9 @@ in
   metabase = handleTest ./metabase.nix {};
   minecraft = handleTest ./minecraft.nix {};
   minecraft-server = handleTest ./minecraft-server.nix {};
+  minidlna = handleTest ./minidlna.nix {};
   miniflux = handleTest ./miniflux.nix {};
   minio = handleTest ./minio.nix {};
-  minidlna = handleTest ./minidlna.nix {};
   misc = handleTest ./misc.nix {};
   moinmoin = handleTest ./moinmoin.nix {};
   mongodb = handleTest ./mongodb.nix {};
@@ -240,10 +240,10 @@ in
   ncdns = handleTest ./ncdns.nix {};
   ndppd = handleTest ./ndppd.nix {};
   neo4j = handleTest ./neo4j.nix {};
-  specialisation = handleTest ./specialisation.nix {};
   netdata = handleTest ./netdata.nix {};
   networking.networkd = handleTest ./networking.nix { networkd = true; };
   networking.scripted = handleTest ./networking.nix { networkd = false; };
+  specialisation = handleTest ./specialisation.nix {};
   # TODO: put in networking.nix after the test becomes more complete
   networkingProxy = handleTest ./networking-proxy.nix {};
   nextcloud = handleTest ./nextcloud {};
@@ -269,8 +269,8 @@ in
   openldap = handleTest ./openldap.nix {};
   opensmtpd = handleTest ./opensmtpd.nix {};
   openssh = handleTest ./openssh.nix {};
-  openstack-image-userdata = (handleTestOn ["x86_64-linux"] ./openstack-image.nix {}).userdata or {};
   openstack-image-metadata = (handleTestOn ["x86_64-linux"] ./openstack-image.nix {}).metadata or {};
+  openstack-image-userdata = (handleTestOn ["x86_64-linux"] ./openstack-image.nix {}).userdata or {};
   orangefs = handleTest ./orangefs.nix {};
   os-prober = handleTestOn ["x86_64-linux"] ./os-prober.nix {};
   osrm-backend = handleTest ./osrm-backend.nix {};
@@ -280,6 +280,7 @@ in
   pam-u2f = handleTest ./pam-u2f.nix {};
   pantheon = handleTest ./pantheon.nix {};
   paperless = handleTest ./paperless.nix {};
+  pdns-recursor = handleTest ./pdns-recursor.nix {};
   peerflix = handleTest ./peerflix.nix {};
   pgjwt = handleTest ./pgjwt.nix {};
   pgmanage = handleTest ./pgmanage.nix {};
@@ -339,9 +340,9 @@ in
   snapper = handleTest ./snapper.nix {};
   sogo = handleTest ./sogo.nix {};
   solr = handleTest ./solr.nix {};
+  sonarr = handleTest ./sonarr.nix {};
   spacecookie = handleTest ./spacecookie.nix {};
   spike = handleTest ./spike.nix {};
-  sonarr = handleTest ./sonarr.nix {};
   sslh = handleTest ./sslh.nix {};
   sssd = handleTestOn ["x86_64-linux"] ./sssd.nix {};
   sssd-ldap = handleTestOn ["x86_64-linux"] ./sssd-ldap.nix {};
@@ -358,13 +359,12 @@ in
   systemd-boot = handleTest ./systemd-boot.nix {};
   systemd-confinement = handleTest ./systemd-confinement.nix {};
   systemd-journal = handleTest ./systemd-journal.nix {};
-  systemd-timesyncd = handleTest ./systemd-timesyncd.nix {};
-  systemd-networkd-vrf = handleTest ./systemd-networkd-vrf.nix {};
   systemd-networkd = handleTest ./systemd-networkd.nix {};
   systemd-networkd-dhcpserver = handleTest ./systemd-networkd-dhcpserver.nix {};
   systemd-networkd-ipv6-prefix-delegation = handleTest ./systemd-networkd-ipv6-prefix-delegation.nix {};
+  systemd-networkd-vrf = handleTest ./systemd-networkd-vrf.nix {};
   systemd-nspawn = handleTest ./systemd-nspawn.nix {};
-  pdns-recursor = handleTest ./pdns-recursor.nix {};
+  systemd-timesyncd = handleTest ./systemd-timesyncd.nix {};
   taskserver = handleTest ./taskserver.nix {};
   telegraf = handleTest ./telegraf.nix {};
   tiddlywiki = handleTest ./tiddlywiki.nix {};
@@ -372,15 +372,16 @@ in
   tinydns = handleTest ./tinydns.nix {};
   tor = handleTest ./tor.nix {};
   # traefik test relies on docker-containers
+  trac = handleTest ./trac.nix {};
   traefik = handleTestOn ["x86_64-linux"] ./traefik.nix {};
   transmission = handleTest ./transmission.nix {};
-  trac = handleTest ./trac.nix {};
-  trilium-server = handleTestOn ["x86_64-linux"] ./trilium-server.nix {};
   trezord = handleTest ./trezord.nix {};
   trickster = handleTest ./trickster.nix {};
+  trilium-server = handleTestOn ["x86_64-linux"] ./trilium-server.nix {};
   tuptime = handleTest ./tuptime.nix {};
-  unbound = handleTest ./unbound.nix {};
+  ucg = handleTest ./ucg.nix {};
   udisks2 = handleTest ./udisks2.nix {};
+  unbound = handleTest ./unbound.nix {};
   unit-php = handleTest ./web-servers/unit-php.nix {};
   upnp = handleTest ./upnp.nix {};
   uwsgi = handleTest ./uwsgi.nix {};
diff --git a/nixos/tests/ucg.nix b/nixos/tests/ucg.nix
new file mode 100644
index 000000000000..47507aee07c1
--- /dev/null
+++ b/nixos/tests/ucg.nix
@@ -0,0 +1,18 @@
+import ./make-test-python.nix ({ pkgs, ... }: {
+  name = "ucg";
+  meta = with pkgs.stdenv.lib.maintainers; {
+    maintainers = [ AndersonTorres ];
+  };
+
+  machine = { pkgs, ... }: {
+    environment.systemPackages = [ pkgs.ucg ];
+  };
+
+  testScript = ''
+    machine.succeed("echo 'Lorem ipsum dolor sit amet\n2.7182818284590' > /tmp/foo")
+    assert "dolor" in machine.succeed("ucg 'dolor' /tmp/foo")
+    assert "Lorem" in machine.succeed("ucg --ignore-case 'lorem' /tmp/foo")
+    machine.fail("ucg --word-regexp '2718' /tmp/foo")
+    machine.fail("ucg 'pisum' /tmp/foo")
+  '';
+})
diff --git a/pkgs/tools/text/ucg/default.nix b/pkgs/tools/text/ucg/default.nix
new file mode 100644
index 000000000000..db8984536804
--- /dev/null
+++ b/pkgs/tools/text/ucg/default.nix
@@ -0,0 +1,40 @@
+{ stdenv
+, fetchFromGitHub
+, pkg-config
+, autoreconfHook
+, pcre
+, nixosTests
+}:
+
+let
+  pname = "ucg";
+  version = "20190225";
+in stdenv.mkDerivation {
+  inherit pname version;
+
+  src = fetchFromGitHub {
+    owner = "gvansickle";
+    repo = pname;
+    rev = "c3a67632f1e3f332bfb102f0db167f34a2e42da7";
+    sha256 = "sha256-/wU1PmI4ejlv7gZzZNasgROYXFiDiIxE9BFoCo6+G5Y=";
+  };
+
+  nativeBuildInputs = [ autoreconfHook pkg-config ];
+  buildInputs = [ pcre ];
+
+  meta = with stdenv.lib; {
+    homepage = "https://github.com/gvansickle/ucg/";
+    description = "Grep-like tool for searching large bodies of source code";
+    longDescription = ''
+      UniversalCodeGrep (ucg) is an extremely fast grep-like tool specialized
+      for searching large bodies of source code. It is intended to be largely
+      command-line compatible with Ack, to some extent with ag, and where
+      appropriate with grep. Search patterns are specified as PCRE regexes.
+    '';
+    license = licenses.gpl3Plus;
+    maintainers = with maintainers; [ AndersonTorres ];
+    platforms = with platforms; unix;
+  };
+
+  passthru.tests = { inherit (nixosTests) ucg; };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 259a468b6863..4b41976c3cb9 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -4383,6 +4383,8 @@ in
     inherit (darwin.apple_sdk.frameworks) Security;
   };
 
+  ucg = callPackage ../tools/text/ucg { };
+
   grive2 = callPackage ../tools/filesystems/grive2 { };
 
   groff = callPackage ../tools/text/groff {