{ stdenv, fetchurl, pkgconfig, smlnj, rsync }: stdenv.mkDerivation rec { name = "twelf-${version}"; version = "1.7.1"; src = fetchurl { url = "//twelf.plparty.org/releases/twelf-src-1.7.1.tar.gz"; sha256 = "0fi1kbs9hrdrm1x4k13angpjasxlyd1gc3ys8ah54i75qbcd9c4i"; }; buildInputs = [ pkgconfig smlnj rsync ]; buildPhase = '' export SMLNJ_HOME=${smlnj} make smlnj ''; installPhase = '' ensureDir $out/bin rsync -av bin/* $out/bin/ ensureDir $out/share/emacs/site-lisp/twelf/ rsync -av emacs/ $out/share/emacs/site-lisp/twelf/ ensureDir $out/share/twelf/examples rsync -av examples/ $out/share/twelf/examples/ ensureDir $out/share/twelf/vim rsync -av vim/ $out/share/twelf/vim/ ''; meta = { description = "Twelf logic proof assistant"; longDescription = '' Twelf is a language used to specify, implement, and prove properties of deductive systems such as programming languages and logics. Large research projects using Twelf include the TALT typed assembly language, a foundational proof-carrying-code system, and a type safety proof for Standard ML. ''; homepage = http://twelf.org/wiki/Main_Page; license = "MIT"; maintainers = with stdenv.lib.maintainers; [ jwiegley ]; platforms = stdenv.lib.platforms.unix; }; }