firedrake-run-split-tests: fall back when GNU parallel is missing#5147

connorjward merged 1 commit into

firedrakeproject:releasefiredrakeproject/firedrake:releasefrom

cpjordan:cpjordan/gnu-parallel-workaroundcpjordan/firedrake:cpjordan/gnu-parallel-workaroundCopy head branch name to clipboard