Fix overriding of vendorHash and various attributes via the fixed point
attribute support of stdenv.mkDerivation.
Pass as derivation attributes
goModules, modRoot, vendorHash, deleteVendor, and proxyVendor.
Move goModules and vendorHash out of passthru.
Co-authored-by: Doron Behar <doron.behar@gmail.com>
eed069a5bc