xbps will successfully index a package with the name containing x86_64 but cannot install it (or sometimes can, but cannot uninstall it). I was unable to reproduce this with another architecture (like calling a package foo-aarch64-1.0_1) or with just a false revision (like foo_1-1.0_1).
mkdir -p pkg/foo/bar repo root
echo asdf > pkg/foo/bar/baz
cd repo
xbps-create -A noarch -n foo-x86_64-1.0_1 -s "foo pkg" ../pkg
xbps-rindex -d -a ./*.xbps
cd ..
xbps-install -r root -R repo -yvd foo-x86_64
[DEBUG] XBPS: 0.59.1 API: 20200221 GIT: UNSET
[DEBUG] Processing configuration directory: /tmp/xbps-test/root/etc/xbps.d
[DEBUG] Processing system configuration directory: /tmp/xbps-test/root/usr/share/xbps.d
[DEBUG] rootdir=/tmp/xbps-test/root
[DEBUG] metadir=/tmp/xbps-test/root/var/db/xbps
[DEBUG] cachedir=/tmp/xbps-test/root/var/cache/xbps
[DEBUG] confdir=/tmp/xbps-test/root/etc/xbps.d
[DEBUG] sysconfdir=/tmp/xbps-test/root/usr/share/xbps.d
[DEBUG] syslog=true
[DEBUG] bestmatching=false
[DEBUG] keepconf=false
[DEBUG] Architecture: x86_64
[DEBUG] Target Architecture: (null)
[DEBUG] Repository[0]=/tmp/xbps-test/repo
[DEBUG] [pkgdb] initialized ok.
[DEBUG] [rpool] checking `/tmp/xbps-test/repo' at index 0
[DEBUG] [repo] `/tmp/xbps-test/repo/x86_64-stagedata' open stagedata No such file or directory
[DEBUG] [rpool] `/tmp/xbps-test/repo' registered.
[DEBUG] [rpool] checking `/tmp/xbps-test/repo' at index 0
[DEBUG] xbps_transaction_install_pkg: trans_find_pkg foo-x86_64: 2
Package 'foo-x86_64' not found in repository pool.
[DEBUG] xbps_pkgdb_unlock: pkgdb_fd 3
[DEBUG] [pkgdb] released ok.
xbps will successfully index a package with the name containing
x86_64but cannot install it (or sometimes can, but cannot uninstall it). I was unable to reproduce this with another architecture (like calling a packagefoo-aarch64-1.0_1) or with just a false revision (likefoo_1-1.0_1).