#in make.conf:  PORTAGE_BINHOST="file:///mnt/crucialp1/systemd-verified-cow-1-binpkgs/"

genr8too /mnt/crucialp1 # emerge -avg dev-python/tpm2-pytss

Dependency resolution took 10.21 s (backtrack: 0/20).

Local copy of remote index is up-to-date and will be used.
[binary  N    ~] dev-python/tpm2-pytss-2.1.0-r1-1::gentoo  USE="fapi -debug -test" PYTHON_TARGETS="python3_11 -python3_10" 590 KiB
[binary  N     ]  dev-python/asn1crypto-1.5.1_p20231012-1::gentoo  USE="-test" PYTHON_TARGETS="python3_11 (-pypy3) -python3_10 (-python3_12)" 333 KiB

Total: 2 packages (2 new, 2 binaries), Size of downloads: 922 KiB

Would you like to merge these packages? [Yes/No] Y

>>> Emerging binary (1 of 2) dev-python/asn1crypto-1.5.1_p20231012::gentoo
 * Fetching in the background:
 * /var/cache/binpkgs/dev-python/asn1crypto/asn1crypto-1.5.1_p20231012-2.xpak.partial
 * To view fetch progress, run in another terminal:
 * tail -f /var/log/emerge-fetch.log
>>> Extracting info
Error reading binpkg '/var/cache/binpkgs/dev-python/asn1crypto/asn1crypto-1.5.1_p20231012-1.xpak': [Errno 2] No such file or directory: '/var/cache/binpkgs/dev-python/asn1crypto/asn1crypto-1.5.1_p20231012-1.xpak'!!! Error Extracting '/var/cache/binpkgs/dev-python/asn1crypto/asn1crypto-1.5.1_p20231012-1.xpak', ('dev-python/asn1crypto-1.5.1_p20231012', 1, 340016, 1703705004, 1703705004)

>>> Failed to emerge dev-python/asn1crypto-1.5.1_p20231012, Log file:

>>>  '/var/cache/buildlogs/build/dev-python/asn1crypto-1.5.1_p20231012:20240102-165545.log.gz'
*** Resuming merge...

These are the packages that would be merged, in reverse order:

Calculating dependencies... done!
Dependency resolution took 2.16 s.


Total: 0 packages, Size of downloads: 0 KiB
 * emerge --keep-going: dev-python/tpm2-pytss-2.1.0-r1 dropped because it
 * requires dev-python/asn1crypto[python_targets_python3_11(-)]

 * Messages for package dev-python/tpm2-pytss-2.1.0-r1:

 * emerge --keep-going: dev-python/tpm2-pytss-2.1.0-r1 dropped because it
 * requires dev-python/asn1crypto[python_targets_python3_11(-)]
 *
 * The following 2 packages have failed to build, install, or execute
 * postinst:
 *
 *  (dev-python/asn1crypto-1.5.1_p20231012-1:0/0::gentoo, binary scheduled for merge), Log file:
 *   '/var/cache/buildlogs/build/dev-python/asn1crypto-1.5.1_p20231012:20240102-165545.log.gz'
 *  (dev-python/tpm2-pytss-2.1.0-r1-1:0/0::gentoo, binary scheduled for merge)
 *

#Remote (-1):
genr8too /mnt/crucialp1 # ls /mnt/crucialp1/systemd-verified-cow-1-binpkgs/dev-python/tpm2-pytss/
total 600
drwxr-xr-x.  2 root root superuser:object_r:unlabeled_t   4096 Dec 27 14:25 .
drwxr-xr-x. 20 root root superuser:object_r:unlabeled_t   4096 Dec 27 14:25 ..
-rw-r--r--.  1 root root superuser:object_r:unlabeled_t 603691 Dec 27 14:25 tpm2-pytss-2.1.0-r1-1.xpak
genr8too /mnt/crucialp1 # ls /mnt/crucialp1/systemd-verified-cow-1-binpkgs/dev-python/asn1crypto
total 344
drwxr-xr-x.  2 root root superuser:object_r:unlabeled_t   4096 Dec 27 14:23 .
drwxr-xr-x. 20 root root superuser:object_r:unlabeled_t   4096 Dec 27 14:25 ..
-rw-r--r--.  1 root root superuser:object_r:unlabeled_t 340016 Dec 27 14:23 asn1crypto-1.5.1_p20231012-1.xpak

#Local (-2):
genr8too /mnt/crucialp1 # ls /var/cache/binpkgs/dev-python/tpm2-pytss/
total 600
drwxr-xr-x.  2 root root root:object_r:var_t   4096 Jan  2 11:55 .
drwxr-xr-x. 35 root root root:object_r:var_t   4096 Jan  2 11:55 ..
-rw-r--r--.  1 root root root:object_r:var_t 603691 Jan  2 11:55 tpm2-pytss-2.1.0-r1-2.xpak
genr8too /mnt/crucialp1 # ls /var/cache/binpkgs/dev-python/asn1crypto
total 344
drwxr-xr-x.  2 root root root:object_r:var_t   4096 Jan  2 11:55 .
drwxr-xr-x. 35 root root root:object_r:var_t   4096 Jan  2 11:55 ..
-rw-r--r--.  1 root root root:object_r:var_t 340016 Jan  2 11:55 asn1crypto-1.5.1_p20231012-2.xpak