blastem: use Python 3 and remove unneeded resources

[danielnachun]

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[danielnachun]

@nandahkrishna I think we need to notify the blastem developer that xcf2png from xcftools is unmaintained and broken, and that they can just use imagemagick to convert the XCF files to PNGs, as detailed here: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=982499. I don't know if you want to reach out to them since you were already in contact, or if you want me to do it. Regardless, we'll be able to move this formula off of Python 2 using an existing upstream commit, so it does not need to be deprecated anymore.

[nandahkrishna]

I think we need to notify the blastem developer that xcf2png from xcftools is unmaintained and broken, and that they can just use imagemagick to convert the XCF files to PNGs

I've sent them a message.

[danielnachun]

I think we need to notify the blastem developer that xcf2png from xcftools is unmaintained and broken, and that they can just use imagemagick to convert the XCF files to PNGs

I've sent them a message.

Thanks @nandahkrishna!

[danielnachun]

One last question - I think it might make sense for us to add depends_on arch :x86_64 because this is an emulator, and porting emulators to new host architectures is a non-trivial task. So I don't think we can expect this to support ARM64 without a very significant amount of work.

[BrewTestBot]

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