checkInputs used to be added to nativeBuildInputs. Now we have
nativeCheckInputs to do that instead. Doing this treewide change allows
to keep hashes identical to before the introduction of
nativeCheckInputs.
the old hash was for 2.0.5, so the store path for the dist-info was:
/nix/store/v5sgpkxpp950chzdzzj4b5yl9r0w0by7-python3.7-Flask-Script-2.0.6/lib/python3.7/site-packages/Flask_Script-2.0.5.dist-info
Uses the HTTPS url for cases where the existing URL has a permanent
redirect. For each domain, at least one fixed derivation URL was
downloaded to test the domain is properly serving downloads.
Also fixes jbake source URL, which was broken.
