diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index df4181c4325d..e99c344d093e 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -3429,6 +3429,8 @@ in
 
   halide = callPackage ../development/compilers/halide { };
 
+  ham = pkgs.perlPackages.ham;
+
   hardinfo = callPackage ../tools/system/hardinfo { };
 
   hdapsd = callPackage ../os-specific/linux/hdapsd { };
diff --git a/pkgs/top-level/perl-packages.nix b/pkgs/top-level/perl-packages.nix
index ad57c09037d1..7008773788b8 100644
--- a/pkgs/top-level/perl-packages.nix
+++ b/pkgs/top-level/perl-packages.nix
@@ -6830,6 +6830,47 @@ let
     buildInputs = [ TestSimple13 ];
   };
 
+  ham = buildPerlPackage rec {
+    name = "ham-unstable-${version}";
+    version = "2019-01-22";
+
+    src = fetchFromGitHub {
+      owner = "kernkonzept";
+      repo = "ham";
+      rev = "37c2e4e8b8bd779ba0f8c48a3c6ba34bad860b92";
+      sha256 = "0h5r5256niskypl4g1j2573wqi0nn0mai5p04zsa06xrgyjqcy2j";
+    };
+
+    outputs = [ "out" ];
+
+    buildInputs = [ pkgs.makeWrapper ];
+    propagatedBuildInputs = [ pkgs.openssh GitRepository URI XMLMini ];
+
+    preConfigure = ''
+      patchShebangs .
+      touch Makefile.PL
+      rm -f Makefile
+    '';
+
+    installPhase = ''
+      mkdir -p $out/lib $out/bin
+      cp -r . $out/lib/ham
+
+      makeWrapper $out/lib/ham/ham $out/bin/ham --argv0 ham \
+        --prefix PATH : ${pkgs.openssh}/bin
+    '';
+
+    doCheck = false;
+
+    meta = {
+      description = "A tool to manage big projects consisting of multiple loosely-coupled git repositories";
+      homepage = https://github.com/kernkonzept/ham;
+      license = "unknown"; # should be gpl2, but not quite sure
+      maintainers = with stdenv.lib.maintainers; [ aw ];
+      platforms = stdenv.lib.platforms.unix;
+    };
+  };
+
   HashFlatten = buildPerlPackage rec {
     name = "Hash-Flatten-1.19";
     src = fetchurl {