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-rwxr-xr-xsrc/nix-build/nix-build.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/nix-build/nix-build.cc b/src/nix-build/nix-build.cc
index b7cf36d16071..d5f23a37fe65 100755
--- a/src/nix-build/nix-build.cc
+++ b/src/nix-build/nix-build.cc
@@ -438,7 +438,7 @@ int main(int argc, char ** argv)
                         "[ -e $stdenv/setup ] && source $stdenv/setup; "
                         "%3%"
                         "set +e; "
-                        "[ -n \"$PS1\" ] && PS1=\"\\n\\[\\033[1;32m\\][nix-shell:\\w]\\$\\[\\033[0m\\] \"; "
+                        R"s([ -n "$PS1" ] && PS1='\n\[\033[1;32m\][nix-shell:\w]\$\[\033[0m\] '; )s"
                         "if [ \"$(type -t runHook)\" = function ]; then runHook shellHook; fi; "
                         "unset NIX_ENFORCE_PURITY; "
                         "unset NIX_INDENT_MAKE; "