skip unpacking newtypes that aren't reduced by topNormaliseType.

fix CoreAlt change.
26 jobs for !4140 with os/unpack_sums in 517 minutes and 12 seconds (queued for 12 minutes and 51 seconds)
merge request
Name Stage Failure
failed
validate-x86_64-darwin Full Build
ghc-x86_64-apple-darwin.tar.xz: found 1 matching files 
junit.xml: found 1 matching files

performance-metrics.tsv: found 1 matching files

Uploading artifacts to coordinator... ok
id=593645 responseStatus=201 Created token=KsLLXh-i
Uploading artifacts...
Runtime platform
arch=amd64 os=darwin pid=42455 revision=v12.7.0 version=12.7.0
junit.xml: found 1 matching files

Uploading artifacts to coordinator... ok
id=593645 responseStatus=201 Created token=KsLLXh-i
ERROR: Job failed: exit status 1
failed
validate-aarch64-linux-deb10 Full Build
Uploading artifacts...
WARNING: ghc-aarch64-linux-deb10.tar.xz: no matching files
WARNING: junit.xml: no matching files
WARNING: performance-metrics.tsv: no matching files
ERROR: No files to upload
Uploading artifacts...
WARNING: junit.xml: no matching files
ERROR: No files to upload
ERROR: Job failed: exit code 1
failed
validate-armv7-linux-deb10 Full Build
Uploading artifacts...
ghc-armv7-linux-deb10.tar.xz: found 1 matching files

junit.xml: found 1 matching files

performance-metrics.tsv: found 1 matching files

Uploading artifacts to coordinator... ok
id=589399 responseStatus=201 Created token=qzUKZEie
Uploading artifacts...
junit.xml: found 1 matching files

Uploading artifacts to coordinator... ok
id=589399 responseStatus=201 Created token=qzUKZEie
ERROR: Job failed: exit code 1