diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 224aae7b574a..395745413140 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -16752,8 +16752,19 @@ in {
       rev = "64cbb10095cf9ef0270d65fff58085a13bc0abe9";
       sha256 = "0s5kz5ln96ka0f1sa9nyp34c28mkxkrgcxbvysdawlppg7ay9s1z";
     };
+    buildInputs = with pkgs; [ bashInteractive ]; # needed for bash-completion helper
     propagatedBuildInputs = with self; [ urlgrabber m2crypto pyyaml ];
-    postInstall = "ln -s $out/bin/osc-wrapper.py $out/bin/osc";
+    postInstall = ''
+      ln -s $out/bin/osc-wrapper.py $out/bin/osc
+      install -D -m555 dist/osc.complete $out/share/bash-completion/helpers/osc-helper
+      mkdir -p $out/share/bash-completion/completions
+      cat >>$out/share/bash-completion/completions/osc <<EOF
+      test -z "\$BASH_VERSION" && return
+      complete -o default _nullcommand >/dev/null 2>&1 || return
+      complete -r _nullcommand >/dev/null 2>&1         || return
+      complete -o default -C $out/share/bash-completion/helpers/osc-helper osc
+      EOF
+    '';
     meta = {
       description = "opensuse-commander with svn like handling";
       maintainers = [ maintainers.peti ];