bug#45165: binutils-mesboot0 fails at configure, cannot find lex

[Carl Dong]

Some more information from my debugging:

1. This error is reproducible even when I specify --cores=1, which is very 
strange
2. I have attached the full log to this email
3. I have uploaded the --keep-failed directory here: 
https://nextcloud.carl.homeserver.net/s/MtDYCwsSSdd7JW3

Looking at that directory, and doing some googling, I see that this is most 
likely the cause: 
https://lists.gnu.org/archive/html/bug-binutils/2016-01/msg00076.html

Corresponding fix: 
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=3d961d0d3a797b4d463024a11131e96c213dee27

Not sure how best to apply the fix in Guix, should we patch override.m4 and 
regenerate? Patch everything and not regenerate? Patch automake itself and 
regenerate?

Also, some lingering mysteries:
1. Ludovic mentioned that there were substitutes for this particular 
derivation, and I did not disable substitutes (other packages in this pull even 
used substitutes). Why did substitution fail?
2. Ludovic and others mentioned that they were able to build successfully. Why 
did it fail on my machine even with --cores=1?

Cheers,
Carl Dong

2020-10-10-binutils-mesboot0.log
Description: Binary data