···

       
44
       
44
       
 
       
  helpScript = pkgs.writeScriptBin "nixos-help"

     

       
45
       
45
       
 
       
    ''

     

       
46
       
46
       
 
       
      #! ${pkgs.runtimeShell} -e

     

       
47
       
47
       
-
       
      browser="$BROWSER"

     

       
47
       
47
       
+
       
      # Finds first executable browser in a colon-separated list.

     

       
48
       
48
       
+
       
      # (see how xdg-open defines BROWSER)

     

       
49
       
49
       
+
       
      browser="$(

     

       
50
       
50
       
+
       
        IFS=: ; for b in $BROWSER; do

     

       
51
       
51
       
+
       
          [ -n "$(type -P "$b" || true)" ] && echo "$b" && break

     

       
52
       
52
       
+
       
        done

     

       
53
       
53
       
+
       
      )"

     

       
48
       
54
       
 
       
      if [ -z "$browser" ]; then

     

       
49
       
55
       
 
       
        browser="$(type -P xdg-open || true)"

     

       
50
       
56
       
 
       
        if [ -z "$browser" ]; then