>>> Emerging (1 of 1) net-libs/libmicrodns-0.1.2::gentoo
 * microdns-0.1.2.tar.xz BLAKE2B SHA512 size ;-) ...                                                                                                     [ ok ]
>>> Unpacking source...
>>> Unpacking microdns-0.1.2.tar.xz to /var/tmp/portage/net-libs/libmicrodns-0.1.2/work
>>> Source unpacked in /var/tmp/portage/net-libs/libmicrodns-0.1.2/work
>>> Preparing source in /var/tmp/portage/net-libs/libmicrodns-0.1.2/work/microdns-0.1.2 ...
>>> Source prepared.
>>> Configuring source in /var/tmp/portage/net-libs/libmicrodns-0.1.2/work/microdns-0.1.2 ...
Traceback (most recent call last):
  File "/usr/lib/python-exec/python3.6/meson", line 6, in <module>
    from pkg_resources import load_entry_point
ModuleNotFoundError: No module named 'pkg_resources'
 * ERROR: net-libs/libmicrodns-0.1.2::gentoo failed (configure phase):
 *   __eapi7_ver_compare: invalid version:
 *
 * Call stack:
 *     ebuild.sh, line  125:  Called src_configure
 *   environment, line 2186:  Called meson_src_configure
 *   environment, line 1487:  Called ver_test '' '-lt' '0.54'
 *   environment, line 2923:  Called __eapi7_ver_compare '' '0.54'
 *   environment, line  215:  Called die
 * The specific snippet of code:
 *       [[ ${va} =~ ${re} ]] || die "${FUNCNAME}: invalid version: ${va}";
 *
 * If you need support, post the output of `emerge --info '=net-libs/libmicrodns-0.1.2::gentoo'`,
 * the complete build log and the output of `emerge -pqv '=net-libs/libmicrodns-0.1.2::gentoo'`.
 * The complete build log is located at '/var/tmp/portage/net-libs/libmicrodns-0.1.2/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/net-libs/libmicrodns-0.1.2/temp/environment'.
 * Working directory: '/var/tmp/portage/net-libs/libmicrodns-0.1.2/work/microdns-0.1.2'
 * S: '/var/tmp/portage/net-libs/libmicrodns-0.1.2/work/microdns-0.1.2'

>>> Failed to emerge net-libs/libmicrodns-0.1.2, Log file:

>>>  '/var/tmp/portage/net-libs/libmicrodns-0.1.2/temp/build.log'

 * Messages for package net-libs/libmicrodns-0.1.2:

 * ERROR: net-libs/libmicrodns-0.1.2::gentoo failed (configure phase):
 *   __eapi7_ver_compare: invalid version:
 *
 * Call stack:
 *     ebuild.sh, line  125:  Called src_configure
 *   environment, line 2186:  Called meson_src_configure
 *   environment, line 1487:  Called ver_test '' '-lt' '0.54'
 *   environment, line 2923:  Called __eapi7_ver_compare '' '0.54'
 *   environment, line  215:  Called die
 * The specific snippet of code:
 *       [[ ${va} =~ ${re} ]] || die "${FUNCNAME}: invalid version: ${va}";
 *
 * If you need support, post the output of `emerge --info '=net-libs/libmicrodns-0.1.2::gentoo'`,
 * the complete build log and the output of `emerge -pqv '=net-libs/libmicrodns-0.1.2::gentoo'`.
 * The complete build log is located at '/var/tmp/portage/net-libs/libmicrodns-0.1.2/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/net-libs/libmicrodns-0.1.2/temp/environment'.
 * Working directory: '/var/tmp/portage/net-libs/libmicrodns-0.1.2/work/microdns-0.1.2'
 * S: '/var/tmp/portage/net-libs/libmicrodns-0.1.2/work/microdns-0.1.2'