Because why not?
An automated check of this bug failed - repoman reported dependency errors (55 lines truncated): > dependency.bad app-crypt/yubikey-manager/yubikey-manager-2.0.0.ebuild: DEPEND: amd64(default/linux/amd64/17.0) ['dev-python/fido2[python_targets_python2_7(-)?,python_targets_python3_4(-)?,python_targets_python3_5(-)?,python_targets_python3_6(-)?,-python_single_target_python2_7(-),-python_single_target_python3_4(-),-python_single_target_python3_5(-),-python_single_target_python3_6(-)]', 'dev-python/pyscard[python_targets_python2_7(-)?,python_targets_python3_4(-)?,python_targets_python3_5(-)?,python_targets_python3_6(-)?,-python_single_target_python2_7(-),-python_single_target_python3_4(-),-python_single_target_python3_5(-),-python_single_target_python3_6(-)]'] > dependency.bad app-crypt/yubikey-manager/yubikey-manager-2.0.0.ebuild: RDEPEND: amd64(default/linux/amd64/17.0) ['dev-python/fido2[python_targets_python2_7(-)?,python_targets_python3_4(-)?,python_targets_python3_5(-)?,python_targets_python3_6(-)?,-python_single_target_python2_7(-),-python_single_target_python3_4(-),-python_single_target_python3_5(-),-python_single_target_python3_6(-)]', 'dev-python/pyscard[python_targets_python2_7(-)?,python_targets_python3_4(-)?,python_targets_python3_5(-)?,python_targets_python3_6(-)?,-python_single_target_python2_7(-),-python_single_target_python3_4(-),-python_single_target_python3_5(-),-python_single_target_python3_6(-)]'] > dependency.bad app-crypt/yubikey-manager/yubikey-manager-2.0.0.ebuild: DEPEND: amd64(default/linux/amd64/17.0/desktop) ['dev-python/fido2[python_targets_python2_7(-)?,python_targets_python3_4(-)?,python_targets_python3_5(-)?,python_targets_python3_6(-)?,-python_single_target_python2_7(-),-python_single_target_python3_4(-),-python_single_target_python3_5(-),-python_single_target_python3_6(-)]', 'dev-python/pyscard[python_targets_python2_7(-)?,python_targets_python3_4(-)?,python_targets_python3_5(-)?,python_targets_python3_6(-)?,-python_single_target_python2_7(-),-python_single_target_python3_4(-),-python_single_target_python3_5(-),-python_single_target_python3_6(-)]']
An automated check of this bug failed - repoman reported dependency errors (81 lines truncated): > dependency.bad app-crypt/yubikey-manager/yubikey-manager-2.0.0.ebuild: DEPEND: amd64(default/linux/amd64/17.0) ['dev-python/pyscard[python_targets_python2_7(-)?,python_targets_python3_4(-)?,python_targets_python3_5(-)?,python_targets_python3_6(-)?,-python_single_target_python2_7(-),-python_single_target_python3_4(-),-python_single_target_python3_5(-),-python_single_target_python3_6(-)]'] > dependency.bad app-crypt/yubikey-manager/yubikey-manager-2.0.0.ebuild: RDEPEND: amd64(default/linux/amd64/17.0) ['dev-python/pyscard[python_targets_python2_7(-)?,python_targets_python3_4(-)?,python_targets_python3_5(-)?,python_targets_python3_6(-)?,-python_single_target_python2_7(-),-python_single_target_python3_4(-),-python_single_target_python3_5(-),-python_single_target_python3_6(-)]'] > dependency.bad app-crypt/yubikey-manager/yubikey-manager-2.0.0.ebuild: DEPEND: amd64(default/linux/amd64/17.0/desktop) ['dev-python/pyscard[python_targets_python2_7(-)?,python_targets_python3_4(-)?,python_targets_python3_5(-)?,python_targets_python3_6(-)?,-python_single_target_python2_7(-),-python_single_target_python3_4(-),-python_single_target_python3_5(-),-python_single_target_python3_6(-)]'] > dependency.bad dev-python/fido2/fido2-0.5.0.ebuild: DEPEND: amd64(default/linux/amd64/17.0) ['dev-python/pyfakefs[python_targets_python2_7(-)?,python_targets_python3_4(-)?,python_targets_python3_5(-)?,python_targets_python3_6(-)?,-python_single_target_python2_7(-),-python_single_target_python3_4(-),-python_single_target_python3_5(-),-python_single_target_python3_6(-)]'] > dependency.bad dev-python/fido2/fido2-0.5.0.ebuild: DEPEND: amd64(default/linux/amd64/17.0/desktop) ['dev-python/pyfakefs[python_targets_python2_7(-)?,python_targets_python3_4(-)?,python_targets_python3_5(-)?,python_targets_python3_6(-)?,-python_single_target_python2_7(-),-python_single_target_python3_4(-),-python_single_target_python3_5(-),-python_single_target_python3_6(-)]'] > dependency.bad dev-python/fido2/fido2-0.5.0.ebuild: DEPEND: amd64(default/linux/amd64/17.0/desktop/gnome) ['dev-python/pyfakefs[python_targets_python2_7(-)?,python_targets_python3_4(-)?,python_targets_python3_5(-)?,python_targets_python3_6(-)?,-python_single_target_python2_7(-),-python_single_target_python3_4(-),-python_single_target_python3_5(-),-python_single_target_python3_6(-)]']
amd64 stable