{ version = "2016-01-01"; repos = { version = "2016-01-01"; repo1 = { version = "2016-01-01"; src = fetchgit { url = "/tmp/nix-update-fetchgit-test/repo1"; rev = "123"; sha256 = "beef"; }; }; repo2 = { version = "2016-01-01"; src = fetchgit { url = "/tmp/nix-update-fetchgit-test/repo2"; rev = "456"; sha256 = "feeb"; }; }; }; }