chromium: split the sandbox into a seperate output (take 2)

Fixup of 231ed9e

pkgs/applications/networking/browsers/chromium/browser.nix

@@ -7,13 +7,19 @@ mkChromiumDerivation (base: rec {
   packageName = "chromium";
   buildTargets = [ "mksnapshot" "chrome_sandbox" "chrome" ];
 
+  outputs = ["out" "sandbox"];
+
+  sandboxExecutableName = "__chromium-suid-sandbox";
+
   installPhase = ''
     mkdir -p "$libExecPath"
     cp -v "$buildPath/"*.pak "$buildPath/"*.bin "$libExecPath/"
     cp -v "$buildPath/icudtl.dat" "$libExecPath/"
     cp -vLR "$buildPath/locales" "$buildPath/resources" "$libExecPath/"
     cp -v "$buildPath/chrome" "$libExecPath/$packageName"
-    cp -v "$buildPath/chrome_sandbox" "$libExecPath/chrome-sandbox"
+
+    mkdir -p "$sandbox/bin"
+    cp -v "$buildPath/chrome_sandbox" "$sandbox/bin/${sandboxExecutableName}"
 
     mkdir -vp "$out/share/man/man1"
     cp -v "$buildPath/chrome.1" "$out/share/man/man1/$packageName.1"
@@ -29,6 +35,8 @@ mkChromiumDerivation (base: rec {
     done
   '';
 
+  passthru = { inherit sandboxExecutableName; };
+
   meta = {
     description = "An open source web browser from Google";
     homepage = http://www.chromium.org/;

pkgs/applications/networking/browsers/chromium/common.nix

@@ -96,8 +96,6 @@ let
   buildPath = "out/${buildType}";
   libExecPath = "$out/libexec/${packageName}";
 
-  sandboxExecutableName = "__chromium-suid-sandbox";
-
   base = rec {
     name = "${packageName}-${version}";
     inherit (upstream-info) version;
@@ -223,15 +221,6 @@ let
       targets = extraAttrs.buildTargets or [];
       commands = map buildCommand targets;
     in concatStringsSep "\n" commands;
-
-    outputs = ["out" "sandbox"];
-
-    postInstall = ''
-      mkdir -p "$sandbox/bin"
-      mv -v "$out/libexec/chromium/chrome-sandbox" "$sandbox/bin/${sandboxExecutableName}"
-    '';
-
-    passthru = { inherit sandboxExecutableName; };
   };
 
 # Remove some extraAttrs we supplied to the base attributes already.

pkgs/applications/networking/browsers/chromium/default.nix

@@ -109,7 +109,7 @@ in stdenv.mkDerivation {
   inherit (chromium.browser) meta packageName;
 
   passthru = {
-    inherit (chromium) upstream-info;
+    inherit (chromium) upstream-info browser;
     mkDerivation = chromium.mkChromiumDerivation;
     inherit sandboxExecutableName;
   };