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-rw-r--r--pkgs/development/tools/ocaml/ocp-indent/default.nix41
-rw-r--r--pkgs/top-level/all-packages.nix2
2 files changed, 43 insertions, 0 deletions
diff --git a/pkgs/development/tools/ocaml/ocp-indent/default.nix b/pkgs/development/tools/ocaml/ocp-indent/default.nix
new file mode 100644
index 000000000000..d50e003f8474
--- /dev/null
+++ b/pkgs/development/tools/ocaml/ocp-indent/default.nix
@@ -0,0 +1,41 @@
+{ stdenv, fetchurl, ocaml, findlib, ocpBuild, opam, cmdliner }:
+
+let inherit (stdenv.lib) getVersion versionAtLeast; in
+
+assert versionAtLeast (getVersion ocaml) "3.12.1";
+assert versionAtLeast (getVersion ocpBuild) "1.99.3-beta";
+
+stdenv.mkDerivation {
+
+  name = "ocp-indent-1.4.2b";
+
+  src = fetchurl {
+    url = "https://github.com/OCamlPro/ocp-indent/archive/1.4.2b.tar.gz";
+    sha256 = "1p0n2zcl5kf543x2xlqrz1aa51f0dqal8l392sa41j6wx82j0gpb";
+  };
+
+  buildInputs = [ ocaml findlib ocpBuild opam cmdliner ];
+
+  createFindlibDestdir = true;
+
+  # The supplied installer uses opam-installer which breaks when run
+  # normally since it tries to `mkdir $HOME`. However, we can use
+  # `opam-installer --script` to get the shell script that performs only
+  # the installation and just run that. Furthermore, we do the same that is
+  # done by pkgs/development/ocaml-modules/react and rename the paths meant
+  # for opam-installer so that they are in line with the other OCaml
+  # libraries in Nixpkgs.
+  installPhase = ''
+    opam-installer --script --prefix=$out ocp-indent.install \
+    | sed s!lib/ocp-indent!lib/ocaml/${getVersion ocaml}/site-lib/ocp-indent! \
+    | sh
+  '';
+
+  meta = with stdenv.lib; {
+    homepage = "http://typerex.ocamlpro.com/ocp-indent.html";
+    description = "A customizable tool to indent OCaml code";
+    license = licenses.gpl3;
+    platforms = ocaml.meta.platforms;
+    maintainers = [ maintainers.jirkamarsik ];
+  };
+}
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 6981d3acb3a1..955714c528a5 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -3603,6 +3603,8 @@ let
 
     ocpBuild = callPackage ../development/tools/ocaml/ocp-build { };
 
+    ocpIndent = callPackage ../desktops/tools/ocaml/ocp-indent { };
+
     ocsigen_server = callPackage ../development/ocaml-modules/ocsigen-server { };
 
     ounit = callPackage ../development/ocaml-modules/ounit { };