···

       
8
       
8
       
 
       
    # derivation like fetchurl is allowed to do so since its result is

     

       
9
       
9
       
 
       
    # by definition pure.

     

       
10
       
10
       
 
       
    "http_proxy" "https_proxy" "ftp_proxy" "all_proxy" "no_proxy"

     

       
11
       
11
       
+
       
    "HTTP_PROXY" "HTTPS_PROXY" "FTP_PROXY" "ALL_PROXY" "NO_PROXY"

     

       
11
       
12
       
 
       
  ];

     

       
12
       
13
       
 
       


     

       
13
       
14
       
 
       
}