From eefe0786f98e200845d5cc1811cae2b93f720201 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <eelco.dolstra@logicblox.com>
Date: Tue, 20 Aug 2013 13:55:39 +0200
Subject: [PATCH] nixos-help: Use xdg-open if available

---
 modules/services/misc/nixos-manual.nix | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/modules/services/misc/nixos-manual.nix b/modules/services/misc/nixos-manual.nix
index 108ed2911ce0..90e596fdc50d 100644
--- a/modules/services/misc/nixos-manual.nix
+++ b/modules/services/misc/nixos-manual.nix
@@ -21,10 +21,18 @@ let
   help = pkgs.writeScriptBin "nixos-help"
     ''
       #! ${pkgs.stdenv.shell} -e
-      if ! ''${BROWSER:-w3m} ${entry}; then
-        echo "$0: unable to start a web browser; please set \$BROWSER or install ‘w3m’"
-        exit 1
+      browser="$BROWSER"
+      if [ -z "$browser" ]; then
+        browser="$(type -P xdg-open || true)"
+        if [ -z "$browser" ]; then
+          browser="$(type -P w3m || true)"
+          if [ -z "$browser" ]; then
+            echo "$0: unable to start a web browser; please set \$BROWSER"
+            exit 1
+          fi
+        fi
       fi
+      exec "$browser" ${entry}
     '';
 
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