Use Recommends: mesa-* not Requires.

(Trivially) switch the build to python3

libglvnd-python3.patch

@@ -0,0 +1,54 @@
+diff -up libglvnd-1.0.0/src/generate/eglFunctionList.py.jx libglvnd-1.0.0/src/generate/eglFunctionList.py
+--- libglvnd-1.0.0/src/generate/eglFunctionList.py.jx	2017-11-02 12:58:38.000000000 -0400
++++ libglvnd-1.0.0/src/generate/eglFunctionList.py	2018-03-15 12:43:19.113294070 -0400
+@@ -1,4 +1,4 @@
+-#!/usr/bin/python
++#!/usr/bin/python3
+ 
+ """
+ Contains a list of EGL functions to generate dispatch functions for.
+diff -up libglvnd-1.0.0/src/generate/genCommon.py.jx libglvnd-1.0.0/src/generate/genCommon.py
+--- libglvnd-1.0.0/src/generate/genCommon.py.jx	2017-11-02 12:58:38.000000000 -0400
++++ libglvnd-1.0.0/src/generate/genCommon.py	2018-03-15 12:37:13.260268667 -0400
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ # (C) Copyright 2015, NVIDIA CORPORATION.
+ # All Rights Reserved.
+diff -up libglvnd-1.0.0/src/generate/gen_egl_dispatch.py.jx libglvnd-1.0.0/src/generate/gen_egl_dispatch.py
+--- libglvnd-1.0.0/src/generate/gen_egl_dispatch.py.jx	2017-11-02 12:58:38.000000000 -0400
++++ libglvnd-1.0.0/src/generate/gen_egl_dispatch.py	2018-03-15 12:43:00.057032312 -0400
+@@ -1,4 +1,4 @@
+-#!/usr/bin/python
++#!/usr/bin/python3
+ 
+ """
+ Generates dispatch functions for EGL.
+diff -up libglvnd-1.0.0/src/generate/gen_gldispatch_mapi.py.jx libglvnd-1.0.0/src/generate/gen_gldispatch_mapi.py
+--- libglvnd-1.0.0/src/generate/gen_gldispatch_mapi.py.jx	2017-11-02 12:58:38.000000000 -0400
++++ libglvnd-1.0.0/src/generate/gen_gldispatch_mapi.py	2018-03-15 12:37:13.283268982 -0400
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ # Copyright (C) 2010 LunarG Inc.
+ # (C) Copyright 2015, NVIDIA CORPORATION.
+diff -up libglvnd-1.0.0/src/generate/gen_libgl_glxstubs.py.jx libglvnd-1.0.0/src/generate/gen_libgl_glxstubs.py
+--- libglvnd-1.0.0/src/generate/gen_libgl_glxstubs.py.jx	2017-11-02 12:58:38.000000000 -0400
++++ libglvnd-1.0.0/src/generate/gen_libgl_glxstubs.py	2018-03-15 12:37:10.684233282 -0400
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ # (C) Copyright 2015, NVIDIA CORPORATION.
+ # All Rights Reserved.
+diff -up libglvnd-1.0.0/src/generate/gen_libOpenGL_exports.py.jx libglvnd-1.0.0/src/generate/gen_libOpenGL_exports.py
+--- libglvnd-1.0.0/src/generate/gen_libOpenGL_exports.py.jx	2017-11-02 12:58:38.000000000 -0400
++++ libglvnd-1.0.0/src/generate/gen_libOpenGL_exports.py	2018-03-15 12:37:13.308269324 -0400
+@@ -1,4 +1,4 @@
+-#!/usr/bin/env python
++#!/usr/bin/env python3
+ 
+ # (C) Copyright 2015, NVIDIA CORPORATION.
+ # All Rights Reserved.

libglvnd.spec

@@ -11,7 +11,7 @@
 
 Name:           libglvnd
 Version:        1.0.1
-Release:        0.2%{?commit0:.%{date}git%{shortcommit0}}%{?dist}
+Release:        0.3%{?commit0:.%{date}git%{shortcommit0}}%{?dist}
 # Provide an upgrade path from the negativo17.org pkgs which have Epoch 1
 Epoch:          1
 Summary:        The GL Vendor-Neutral Dispatch library
@@ -21,11 +21,12 @@ URL:            https://github.com/NVIDIA/libglvnd
 #Source0:        %%{url}/archive/v%%{version}/%%{name}-%%{version}.tar.gz
 Source0:        %{url}/archive/%{commit0}.tar.gz#/%{name}-%{shortcommit0}.tar.gz
 Patch0:         %{url}/pull/150.patch#/X_GLXCreateContextAtrribsARB_fix_API_break.patch
+Patch1:         libglvnd-python3.patch
 
 BuildRequires:  libtool
 BuildRequires:  gcc
-BuildRequires:  python2
+BuildRequires:  python3
-BuildRequires:  python2-libxml2
+BuildRequires:  python3-libxml2
 BuildRequires:  pkgconfig(glproto)
 BuildRequires:  pkgconfig(x11)
 BuildRequires:  pkgconfig(xext)
@@ -101,7 +102,7 @@ Summary:        GLES support for libglvnd
 Requires:       %{name}%{?_isa} = %{epoch}:%{version}-%{release}
 %{!?_without_mesa_glvnd_default:
 # mesa is the default EGL implementation provider
-Requires:       mesa-libEGL%{?_isa} >= 13.0.4-1
+Recommends:     mesa-libEGL%{?_isa} >= 13.0.4-1
 Provides:       libGLES
 Provides:       libGLES%{?_isa}
 }
@@ -115,7 +116,7 @@ Summary:        EGL support for libglvnd
 Requires:       %{name}%{?_isa} = %{epoch}:%{version}-%{release}
 %{!?_without_mesa_glvnd_default:
 # mesa is the default EGL implementation provider
-Requires:       mesa-libEGL%{?_isa} >= 13.0.4-1
+Recommends:     mesa-libEGL%{?_isa} >= 13.0.4-1
 Provides:       libEGL
 Provides:       libEGL%{?_isa}
 }
@@ -129,7 +130,7 @@ Summary:        GLX support for libglvnd
 Requires:       %{name}%{?_isa} = %{epoch}:%{version}-%{release}
 %{!?_without_mesa_glvnd_default:
 # mesa is the default GL implementation provider
-Requires:       mesa-libGL%{?_isa} >= 13.0.4-1
+Recommends:     mesa-libGL%{?_isa} >= 13.0.4-1
 Provides:       libGL
 Provides:       libGL%{?_isa}
 }
@@ -146,7 +147,6 @@ autoreconf268 -vif
 autoreconf -vif
 %endif
 
-
 %build
 #Prefer asm and tls for x86* and ppc64*
 #armhfp and aarch64 fallback to asm and tsd
@@ -244,6 +244,10 @@ xvfb-run -a  make check V=1 || cat `find . -name test-suite.log`
 
 
 %changelog
+* Thu Mar 15 2018 Adam Jackson <ajax@redhat.com> - 1.0.1-0.3.20180226gitb029c24
+- Use Recommends: mesa-* not Requires.
+- (Trivially) switch the build to python3
+
 * Thu Mar 15 2018 Iryna Shcherbina <ishcherb@redhat.com> - 1:1.0.1-0.2.20180226gitb029c24
 - Update Python 2 dependency declarations to new packaging standards
   (See https://fedoraproject.org/wiki/FinalizingFedoraSwitchtoPython3)