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-rw-r--r--doc/shell.nix8
1 files changed, 3 insertions, 5 deletions
diff --git a/doc/shell.nix b/doc/shell.nix
index 8ac2019f9d6..5fa2b442489 100644
--- a/doc/shell.nix
+++ b/doc/shell.nix
@@ -1,5 +1,3 @@
-{ pkgs ? import ../. {} }:
-(import ./default.nix {}).overrideAttrs (x: {
-  buildInputs = x.buildInputs ++ [ pkgs.xmloscopy pkgs.ruby ];
-
-})
+{ pkgs ? import ../. { } }:
+(import ./default.nix { }).overrideAttrs
+(x: { buildInputs = (x.buildInputs or [ ]) ++ [ pkgs.xmloscopy pkgs.ruby ]; })