linux - DNF fails to synchronize cache when using --installroot option -


i trying install bunch of software in dummy root, can copy new systems quickly. whenever use dnf install or dnf builddep --installroot option fails synchronize cache repositories.

i thought it's missing configuration, copied yum , dnf configuration files installroot dir:

cp /etc/dnf/dnf.conf     /path/to/root_fs/etc/dnf cp /etc/yum.conf         /path/to/root_fs/etc/ cp -r /etc/yum.repos.d/  /path/to/root_fs/etc/

but still is

sudo dnf -c $root_fs_dir/etc/dnf/dnf.conf install gcc --installroot=$root_fs_dir -releasever=23 error: failed synchronize cache repo 'updates'

dnf works fine updating host system. how configure dnf install packages different root dir.

dnf not clever , needs releasever if installs in chroots (bug). miss single - in front of option:

sudo dnf -c $root_fs_dir/etc/dnf/dnf.conf install gcc \   --installroot=$root_fs_dir --releasever=23

but release 23 eol mirrors not have exist anymore. should use supported release version.


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