Add tentative for Ati version

README.md

@@ -83,6 +83,14 @@ nix-build -A nixGLNvidiaBumblebee --argstr nvidiaVersion 390.25
 
 (replace `390.25` with the host driver version gathered earlier.)
 
+For Ati (untested):
+
+```
+nix-build ./default.nix -A nixGLAti --argstr atiUrl "https://www2.ati.com/drivers/linux/radeon-crimson-15.12-15.302-151217a-297685e.zip" --argstr atiVersion "15.12"
+```
+
+(replace the url and the version with the correct ones. At the time of this writting, I have no idea on how we can detect that, ati seems to have a weird file naming convention).
+
 ## Install
 
 ```

default.nix

@@ -1,5 +1,7 @@
 { system ? builtins.currentSystem,
-  nvidiaVersion ? null
+  nvidiaVersion ? null,
+  atiUrl ? null,
+  atiVersion ? null
 }:
 
 let
@@ -21,6 +23,18 @@ rec {
     useGLVND = 0;
   });
 
+  ati = (linuxPackages.ati_drivers_x11.override {
+    libsOnly = true;
+    kernel = null;
+  }).overrideAttrs(oldAttrs : rec {
+    name = "ati_drivers-${atiVersion}";
+    src = fetchurl {
+      url = atiUrl;
+      sha256 = null;
+      curlOpts = "--referer http://support.amd.com/en-us/download/desktop?os=Linux+x86_64";
+    };
+  });
+
   nixGLNvidiaBumblebee = runCommand "nixGLNvidiaBumblebee-${version}" {
     buildInputs = [ nvidiaLibsOnly bumblebee ];
 
@@ -74,4 +88,22 @@ rec {
 
       chmod u+x $out/bin/nixGLIntel
       '';
+
+  nixGLAti = runCommand "nixGLAti-${version}" {
+    buildInputs = [ mesa_drivers ];
+
+     meta = with pkgs.stdenv.lib; {
+         description = "A tool to launch OpenGL application on system other than NixOS - Ati version";
+         homepage = "https://github.com/guibou/nixGL";
+     };
+    } ''
+      mkdir -p $out/bin
+      cat > $out/bin/nixGLAti << FOO
+      #!/usr/bin/env sh
+      export LD_LIBRARY_PATH=${ati}/lib
+      "\$@"
+      FOO
+
+      chmod u+x $out/bin/nixGLAti
+      '';
 }