bug#64074: guix [COMMAND] --load-path does not check if path is valid

Since this behavior is consistent with other GNU tools and my question has been answered, I close the issue.

bug#64340: libsigrokdecode: check phase fails

I am trying to install pulseview, but libsigrokdecode fails to build, dying at the check phase. It appears to be a dependency-related issue - test programs cannot build do to undefined functions. ``` ld: ./.libs/libsigrokdecode.so: undefined reference to `PyList_Insert' ld: ./.libs/libsigrokdeco