this derivation will be built:
  /nix/store/bpqrnmb50ghqqfp45whnnnlzqvg48aj1-pg_isolation_regress-15.19.drv
building '/nix/store/bpqrnmb50ghqqfp45whnnnlzqvg48aj1-pg_isolation_regress-15.19.drv'
pg_isolation_regress-15.19> Running phase: installPhase