From 3370615a7f1ad927ace45e268b694a184d2ffd43 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Th=C3=A9o=20Zimmermann?=
 <theo.zimmermann@univ-paris-diderot.fr>
Date: Thu, 21 Sep 2017 15:06:51 +0200
Subject: [PATCH 1/2] compcert: 3.0.1 -> 3.1

Note that the fix of the VERSION file can likely be removed at the next update.
---
 pkgs/development/compilers/compcert/default.nix | 5 +++--
 pkgs/top-level/all-packages.nix                 | 5 +----
 2 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/pkgs/development/compilers/compcert/default.nix b/pkgs/development/compilers/compcert/default.nix
index f519776b6891..950c7f96b6fb 100644
--- a/pkgs/development/compilers/compcert/default.nix
+++ b/pkgs/development/compilers/compcert/default.nix
@@ -7,11 +7,11 @@ assert lib.versionAtLeast ocamlPackages.ocaml.version "4.02";
 
 stdenv.mkDerivation rec {
   name    = "compcert-${version}";
-  version = "3.0.1";
+  version = "3.1";
 
   src = fetchurl {
     url    = "http://compcert.inria.fr/release/${name}.tgz";
-    sha256 = "0dgrj26dzdy4n3s9b5hwc6lm54vans1v4qx9hdp1q8w1qqcdriq9";
+    sha256 = "0irfwlw2chalp0g2gw0makc699hn3z37sha1a239p9d90mzx03cx";
   };
 
   buildInputs = [ coq ]
@@ -20,6 +20,7 @@ stdenv.mkDerivation rec {
   enableParallelBuilding = true;
 
   configurePhase = ''
+    substituteInPlace VERSION --replace '3.0.1' '3.1'
     substituteInPlace ./configure --replace '{toolprefix}gcc' '{toolprefix}cc'
     ./configure -clightgen -prefix $out -toolprefix ${tools}/bin/ '' +
     (if stdenv.isDarwin then "x86_64-macosx" else "x86_64-linux");
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 19a4432dfb82..f64d01562e39 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -5341,10 +5341,7 @@ with pkgs;
 
   cmucl_binary = callPackage_i686 ../development/compilers/cmucl/binary.nix { };
 
-  compcert = callPackage ../development/compilers/compcert {
-    # Pin the version of coq used in compcert to 8.6 until the next release
-    coq = callPackage ../applications/science/logic/coq { version = "8.6"; };
-  };
+  compcert = callPackage ../development/compilers/compcert { };
 
 
   # Users installing via `nix-env` will likely be using the REPL,

From 8fde5790b4f41cec33e994a0f7faa5326e503b7e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Th=C3=A9o=20Zimmermann?=
 <theo.zimmermann@univ-paris-diderot.fr>
Date: Thu, 21 Sep 2017 15:24:17 +0200
Subject: [PATCH 2/2] compcert: fix license

The license of CompCert is not a generic "INRIA" license. It is "INRIA Non-Commercial
Agreement for the CompCert verified compiler". As unfortunate as it may seem, this
is a non-free license (clearly mentioned as such in its preamble). See also #20256.
---
 lib/licenses.nix                                | 5 +++--
 pkgs/development/compilers/compcert/default.nix | 2 +-
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/lib/licenses.nix b/lib/licenses.nix
index edf35ec035b2..a790b576032d 100644
--- a/lib/licenses.nix
+++ b/lib/licenses.nix
@@ -292,9 +292,10 @@ lib.mapAttrs (n: v: v // { shortName = n; }) rec {
     fullName = "Independent JPEG Group License";
   };
 
-  inria = {
-    fullName  = "INRIA Non-Commercial License Agreement";
+  inria-compcert = {
+    fullName  = "INRIA Non-Commercial License Agreement for the CompCert verified compiler";
     url       = "http://compcert.inria.fr/doc/LICENSE";
+    free      = false;
   };
 
   ipa = spdx {
diff --git a/pkgs/development/compilers/compcert/default.nix b/pkgs/development/compilers/compcert/default.nix
index 950c7f96b6fb..a12f1c42ba61 100644
--- a/pkgs/development/compilers/compcert/default.nix
+++ b/pkgs/development/compilers/compcert/default.nix
@@ -40,7 +40,7 @@ stdenv.mkDerivation rec {
   meta = with stdenv.lib; {
     description = "Formally verified C compiler";
     homepage    = "http://compcert.inria.fr";
-    license     = licenses.inria;
+    license     = licenses.inria-compcert;
     platforms   = platforms.linux ++
                   platforms.darwin;
     maintainers = with maintainers; [ thoughtpolice jwiegley vbgl ];