nixpkgs: add bitkeeper-7.3ce

Closes #16928.

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

pkgs/applications/version-management/bitkeeper/default.nix

@@ -0,0 +1,52 @@
+{ stdenv, fetchurl, perl, gperf, bison, groff
+, pkgconfig, libXft, fontconfig, pcre
+, libtomcrypt, libtommath, lz4, zlib }:
+
+stdenv.mkDerivation rec {
+  name = "bitkeeper-${version}";
+  version = "7.3ce";
+
+  src = fetchurl {
+    url = "https://www.bitkeeper.org/downloads/${version}/bk-${version}.tar.gz";
+    sha256 = "0lk4vydpq5bi52m81h327gvzdzybf8kkak7yjwmpj6kg1jn9blaz";
+  };
+
+  enableParallelBuilding = true;
+
+  buildInputs = [
+    perl gperf bison groff libXft pkgconfig
+    pcre libtomcrypt libtommath lz4
+  ];
+
+  postPatch = ''
+        substituteInPlace port/unix_platform.sh \
+                --replace /bin/rm rm
+        substituteInPlace ./undo.c \
+                --replace /bin/cat cat
+  '';
+
+  sourceRoot = "bk-${version}/src";
+  buildPhase = ''
+    make -j6 V=1 p
+    make image
+  '';
+
+  installPhase = ''
+    ./utils/bk-* $out/bitkeeper
+    mkdir -p $out/bin
+    $out/bitkeeper/bk links $out/bin
+    chmod g-w $out
+  '';
+
+  meta = {
+    description     = "A distributed version control system";
+    longDescription = ''
+      BitKeeper is a fast, enterprise-ready, distributed SCM that
+      scales up to very large projects and down to tiny ones.
+    '';
+    homepage    = https://www.bitkeeper.org/;
+    license     = stdenv.lib.licenses.asl20;
+    platforms   = stdenv.lib.platforms.unix;
+    maintainers = with stdenv.lib.maintainers; [ wscott thoughtpolice ];
+  };
+}

pkgs/top-level/all-packages.nix

@@ -12241,6 +12241,8 @@ in
 
   bibletime = callPackage ../applications/misc/bibletime { };
 
+  bitkeeper = callPackage ../applications/version-management/bitkeeper { };
+
   bitlbee = callPackage ../applications/networking/instant-messengers/bitlbee { };
   bitlbee-plugins = callPackage ../applications/networking/instant-messengers/bitlbee/plugins.nix { };