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Gentoo, nsswitch.conf, and glibc

Once in a while I get issues intalling glibs. This is the message:

>>> Emerging (1 of 3) sys-libs/glibc-2.32-r1::pointlessone
 * Fetching files in the background.
 * To view fetch progress, run in another terminal:
 * tail -f /var/log/emerge-fetch.log
 * glibc-2.32.tar.xz BLAKE2B SHA512 size ;-) ...                                                                                                                                       [ ok ]
 * glibc-2.32-patches-1.tar.xz BLAKE2B SHA512 size ;-) ...                                                                                                                             [ ok ]
 * locale-gen-2.10.tar.gz BLAKE2B SHA512 size ;-) ...                                                                                                                                  [ ok ]
 * gcc-multilib-bootstrap-20180511.tar.xz BLAKE2B SHA512 size ;-) ...                                                                                                                  [ ok ]
 * Using python3.7 to build
>>> Unpacking source...
make -j3 glibc-test CC=x86_64-pc-linux-gnu-gcc
x86_64-pc-linux-gnu-gcc -O2   -Wl,-O1 -Wl,--as-needed  glibc-test.c   -o glibc-test
 * Your /etc/nsswitch.conf is out of date.
 * Please make sure you have 'files' entries for
 * 'passwd:', 'group:' and 'shadow:' databases.
 * For more details see:
 * ERROR: sys-libs/glibc-2.32-r1::pointlessone failed (unpack phase):
 *   nsswitch.conf has no 'files' provider in 'passwd'.
 * Call stack:
 *, line  125:  Called src_unpack
 *   environment, line 3490:  Called sanity_prechecks
 *   environment, line 3254:  Called die
 * The specific snippet of code:
 *                   die "nsswitch.conf has no 'files' provider in '${entry}'.";
 * If you need support, post the output of `emerge --info '=sys-libs/glibc-2.32-r1::pointlessone'`,
 * the complete build log and the output of `emerge -pqv '=sys-libs/glibc-2.32-r1::pointlessone'`.
 * The complete build log is located at '/var/tmp/portage/sys-libs/glibc-2.32-r1/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/sys-libs/glibc-2.32-r1/temp/environment'.
 * Working directory: '/var/tmp/portage/sys-libs/glibc-2.32-r1/work'
 * S: '/var/tmp/portage/sys-libs/glibc-2.32-r1/work/glibc-2.32'

The isssue is not that the nsswitch.conf is incorrect. The issue is that it's not world readable. Make sure emerge can actually read the file.

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