1 files changed, 44 insertions, 0 deletions
diff --git a/nixpkgs/pkgs/applications/science/logic/prooftree/default.nix b/nixpkgs/pkgs/applications/science/logic/prooftree/default.nix
new file mode 100644
index 000000000000..4e65c018d1a2
--- /dev/null
+++ b/nixpkgs/pkgs/applications/science/logic/prooftree/default.nix
@@ -0,0 +1,44 @@
+{ lib, stdenv, fetchurl, pkg-config, ncurses, ocamlPackages }:
+
+stdenv.mkDerivation rec {
+  pname = "prooftree";
+  version = "0.13";
+
+  src = fetchurl {
+    url = "https://askra.de/software/prooftree/releases/prooftree-${version}.tar.gz";
+    sha256 = "0z1z4wqbqwgppkh2bm89fgy07a0y2m6g4lvcyzs09sm1ysklk2dh";
+  };
+
+  strictDeps = true;
+
+  nativeBuildInputs = [ pkg-config ] ++ (with ocamlPackages; [ ocaml findlib camlp5 ]);
+  buildInputs = [ ncurses ] ++ (with ocamlPackages; [ lablgtk ]);
+
+  dontAddPrefix = true;
+  configureFlags = [ "--prefix" "$(out)" ];
+
+  meta = with lib; {
+    description = "A program for proof-tree visualization";
+    longDescription = ''
+      Prooftree is a program for proof-tree visualization during interactive
+      proof development in a theorem prover. It is currently being developed
+      for Coq and Proof General. Prooftree helps against getting lost between
+      different subgoals in interactive proof development. It clearly shows
+      where the current subgoal comes from and thus helps in developing the
+      right plan for solving it.
+
+      Prooftree uses different colors for the already proven subgoals, the
+      current branch in the proof and the still open subgoals. Sequent texts
+      are not displayed in the proof tree itself, but they are shown as a
+      tool-tip when the mouse rests over a sequent symbol. Long proof commands
+      are abbreviated in the tree display, but show up in full length as
+      tool-tip. Both, sequents and proof commands, can be shown in the display
+      below the tree (on single click) or in a separate window (on double or
+      shift-click).
+    '';
+    homepage = "http://askra.de/software/prooftree";
+    platforms = platforms.unix;
+    maintainers = [ maintainers.jwiegley ];
+    license = licenses.gpl3;
+  };
+}