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-rw-r--r--pkgs/build-support/fetchsvn/default.nix9
1 files changed, 1 insertions, 8 deletions
diff --git a/pkgs/build-support/fetchsvn/default.nix b/pkgs/build-support/fetchsvn/default.nix
index 90dc13439a0..85ec52c4bde 100644
--- a/pkgs/build-support/fetchsvn/default.nix
+++ b/pkgs/build-support/fetchsvn/default.nix
@@ -33,13 +33,6 @@ stdenv.mkDerivation {
   
   inherit url rev sshSupport openssh ignoreExternals;
 
-  impureEnvVars = [
-    # We borrow these environment variables from the caller to allow
-    # easy proxy configuration.  This is impure, but a fixed-output
-    # derivation like fetchurl is allowed to do so since its result is
-    # by definition pure.
-    "http_proxy" "https_proxy" "ftp_proxy" "all_proxy" "no_proxy"
-    ];
-
+  impureEnvVars = stdenv.lib.fetchers.proxyImpureEnvVars;
   preferLocalBuild = true;
 }