this derivation will be built:
  /nix/store/7xfhw337m3d7c88grszchi2fy7j8fm1w-helm-lint.drv
building '/nix/store/7xfhw337m3d7c88grszchi2fy7j8fm1w-helm-lint.drv'
helm-lint> ==> Linting /nix/store/g0nq44ys0js5yf85524cjv73czrbwdq8-source/chart
helm-lint> [INFO] Chart.yaml: icon is recommended
helm-lint> 
helm-lint> 1 chart(s) linted, 0 chart(s) failed