diff --git a/pkgs/applications/editors/emacs-modes/proofgeneral/4.3pre.nix b/pkgs/applications/editors/emacs-modes/proofgeneral/4.3pre.nix
deleted file mode 100644
index 815863ac6da1..000000000000
--- a/pkgs/applications/editors/emacs-modes/proofgeneral/4.3pre.nix
+++ /dev/null
@@ -1,53 +0,0 @@
-{ stdenv, fetchurl, emacs, texinfo, texLive, perl, which, automake, enableDoc ? false }:
-
-stdenv.mkDerivation (rec {
-  name = "ProofGeneral-4.3pre150313";
-
-  src = fetchurl {
-    url = "http://proofgeneral.inf.ed.ac.uk/releases/${name}.tgz";
-    sha256 = "1jq5ykkk14xr5qcn4kyxmi5ls0fibr0y47gfygzm1mzrfvz9aw3f";
-  };
-
-  sourceRoot = name;
-
-  buildInputs = [ emacs texinfo perl which ] ++ stdenv.lib.optional enableDoc texLive;
-
-  prePatch =
-    '' sed -i "Makefile" \
-           -e "s|^\(\(DEST_\)\?PREFIX\)=.*$|\1=$out|g ; \
-               s|/sbin/install-info|install-info|g"
-
-
-       sed -i "bin/proofgeneral" -e's/which/type -p/g'
-
-       # @image{ProofGeneral} fails, so remove it.
-       sed -i '94d' doc/PG-adapting.texi
-       sed -i '96d' doc/ProofGeneral.texi
-    '';
-
-  patches = [ ./pg.patch ];
-
-  preBuild = ''
-    make clean;
-  '';
-
-  installPhase =
-    if enableDoc
-    then
-    # Copy `texinfo.tex' in the right place so that `texi2pdf' works.
-    '' cp -v "${automake}/share/"automake-*/texinfo.tex doc
-       make install install-doc
-    ''
-    else "make install";
-
-  meta = {
-    description = "Proof General, an Emacs front-end for proof assistants";
-    longDescription = ''
-      Proof General is a generic front-end for proof assistants (also known as
-      interactive theorem provers), based on the customizable text editor Emacs.
-    '';
-    homepage = http://proofgeneral.inf.ed.ac.uk;
-    license = stdenv.lib.licenses.gpl2Plus;
-    platforms = stdenv.lib.platforms.unix;  # arbitrary choice
-  };
-})
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index debdfb631965..77f9359e2665 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -12501,10 +12501,6 @@ in
     proofgeneral = callPackage ../applications/editors/emacs-modes/proofgeneral/4.4.nix {
       texLive = texlive.combine { inherit (texlive) scheme-basic cm-super ec; };
     };
-    proofgeneral_4_3_pre = callPackage ../applications/editors/emacs-modes/proofgeneral/4.3pre.nix {
-      texinfo = texinfo4 ;
-      texLive = texlive.combine { inherit (texlive) scheme-basic cm-super ec; };
-    };
     proofgeneral_HEAD = callPackage ../applications/editors/emacs-modes/proofgeneral/HEAD.nix {
       texinfo = texinfo4 ;
       texLive = texlive.combine { inherit (texlive) scheme-basic cm-super ec; };