Elaboration failure with hash of 00000000 expected #1152
Description
I'm running into a similar issue to #769 but somehow something's depending on something with a hash of 00000000. The commands being run by Cocotb are (with ... replacing paths etc. that shouldn't be relevant, and names changed to protect the innocent):
nvc \
--work=work \
--std=08 \
--map=unisim:.../unisim.08 \
--map=XPM:.../xpm.08 \
-M 128m \
-H 128m \
-a \
.../SUPPORT.vhd \
.../BAR.vhd \
.../FOO.vhd \
.../common/OTHER.vhd
# in directory .../sim_build
nvc \
--work=work \
--std=08 \
--map=unisim:.../unisim.08 \
--map=XPM:.../xpm.08 \
-M 128m \
-H 128m \
-e foo \
--no-save \
--jit \
-gDATA_WIDTH=32 \
-r \
--load=.../site-packages/cocotb/libs/libcocotbvhpi_nvc.so
# in directory .../sim_buildwhich produces
** Fatal: .../sim_build/work/WORK.FOO-BEHAVIORAL: design unit depends on
WORK.BAR with checksum 00000000 but the current version in the library has checksum 63edf8e7
** Note: this usually means WORK.FOO-BEHAVIORAL is outdated and needs to be reanalysed
This happens when I completely delete the sim_build directory. and re-run the test, which performs the above analysis and elaboration calls.