Errors on MacOS (v0.3.1) about nix-prefetch HOT 5 CLOSED

I am not familiar with MacOS. The first case should be fixed in the latest release. The other two errors are strange to me, as it concerns this line: [[ $input_type =~ ^(|nix|json|shell)$ ]] || die "Unsupported input type '${input_type}'."
As both values '' or 'nix' should and do match that regex on Linux.

Is MacOS using a different bash than Linux that does not support these regexes?

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Still relevant to me

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Is MacOS using a different bash than Linux that does not support these regexes?

@msteen the regex ^(|nix|json|shell)$ is not posix compliant, | can't follow ( or another | or precede ) so it's not possible to match empty string https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap09.html#tag_09_04_03:
A <vertical-line> appearing first or last in an ERE, or immediately following a <vertical-line> or a <left-parenthesis>, or immediately preceding a <right-parenthesis>, produces undefined results.

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I'm hitting this on the 0.4.0 release as well - it feels weird that the main.sh script uses a bash from the nix store (/nix/store/30njb8l701pwnm5ya749fh2cgyc2d70m-bash-4.4-p23/bin/bash) on linux as well as on macOS - and only on macOS, it fails.

Anyway, I guess fixing those regexes might be the way forward for this issue.

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With #24, I can use nix-prefetch on macOS again; would appreciate if other people could test!

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