I want to downgrade systemd from 207-r2 to 204 (highest stable). I currently have virtual/udev-206-r2 installed, which prevents systemd-204.
OK. So I need to downgrade virtual/udev to 200. I thought emerge -1 =virtual/udev-200 =sys-apps/systemd-204 would do it. But this failed (see below) and suggested masking might help. So I added package.mask/systemd, which contains >=virtual/udev-201 >=sys-apps/systemd-205 and then issued the same emerge as above. But this also failed (see below). What incantation do I need? thanks, allan =========== output from emerge without package.mask/systemd ========= livecd package.mask # emerge -1 =virtual/udev-200 =sys-apps/systemd-204 These are the packages that would be merged, in reverse order: Calculating dependencies... done! [ebuild UD ] sys-apps/systemd-204 [207-r2] USE="acl firmware-loader gudev introspection keymap%* kmod pam policykit tcpd -audit -cryptsetup -doc -gcrypt -http -lzma -openrc -python -qrcode (-selinux) -static-libs% {-test} -vanilla -xattr (-filecaps%*)" ABI_X86="(-32%) (-64%*) (-x32%)" PYTHON_SINGLE_TARGET="python2_7" PYTHON_TARGETS="python2_7" 2,136 kB [nomerge ] gnome-base/gnome-3.6.2:2.0 USE="bluetooth cdr cups extras fallback -accessibility" [nomerge ] gnome-base/gnome-shell-3.6.3.1 USE="bluetooth i18n networkmanager systemd" PYTHON_TARGETS="python2_7 -python2_6" [nomerge ] net-wireless/gnome-bluetooth-3.6.1:2/11 USE="introspection -debug -sendto" [nomerge ] app-mobilephone/obexd-0.46 USE="eds usb -nokia -server" [nomerge ] dev-libs/openobex-1.5 USE="bluetooth usb -debug -irda -syslog" [nomerge ] virtual/libusb-0-r1 ABI_X86="(64) -32 (-x32)" [nomerge ] dev-libs/libusb-compat-0.1.5-r2 USE="-debug -examples -static-libs" ABI_X86="(64) -32 (-x32)" [nomerge ] virtual/libusb-1-r1:1 ABI_X86="(64) -32 (-x32)" [nomerge ] dev-libs/libusbx-1.0.17:1 USE="udev -debug -doc -examples -static-libs {-test}" ABI_X86="(64) -32 (-x32)" [nomerge ] virtual/udev-206-r2 USE="gudev introspection kmod (-selinux) -static-libs" ABI_X86="(64) -32 (-x32)" [nomerge ] sys-fs/udev-207 USE="acl firmware-loader gudev introspection kmod openrc -doc (-selinux) -static-libs" ABI_X86="(64) -32 (-x32)" [ebuild N ] sys-fs/udev-init-scripts-26 5 kB [ebuild N ] sys-fs/udev-207 USE="acl firmware-loader gudev introspection kmod openrc -doc (-selinux) -static-libs" ABI_X86="(64) -32 (-x32)" 2 kB [ebuild UD ] virtual/udev-200 [206-r2] USE="gudev hwdb%* introspection keymap%* kmod (-selinux) -static-libs" ABI_X86="(-32%) (-64%*) (-x32%)" 0 kB [blocks B ] sys-apps/systemd ("sys-apps/systemd" is blocking sys-fs/udev-207) [blocks B ] sys-fs/udev ("sys-fs/udev" is blocking sys-apps/systemd-207-r2, sys-apps/systemd-204) Total: 4 packages (2 downgrades, 2 new), Size of downloads: 2,142 kB Conflict: 2 blocks (2 unsatisfied) !!! Multiple package instances within a single package slot have been pulled !!! into the dependency graph, resulting in a slot conflict: virtual/udev:0 (virtual/udev-200::gentoo, ebuild scheduled for merge) pulled in by =virtual/udev-200[gudev] required by (dev-libs/libgusb-0.1.6::gentoo, installed) (and 27 more with the same problem) (virtual/udev-206-r2::gentoo, installed) pulled in by >=virtual/udev-200[abi_x86_32(-)?,abi_x86_64(-)?,abi_x86_x32(-)?,abi_x86_32(-)?,abi_x86_64(-)?,abi_mips_n32(-)?,abi_mips_n64(-)?,abi_mips_o32(-)?] required by (dev-libs/libusbx-1.0.17::gentoo, installed) >=virtual/udev-206-r2 required by (sys-fs/udev-207::gentoo, ebuild scheduled for merge) It may be possible to solve this problem by using package.mask to prevent one of those packages from being selected. However, it is also possible that conflicting dependencies exist such that they are impossible to satisfy simultaneously. If such a conflict exists in the dependencies of two different packages, then those packages can not be installed simultaneously. You may want to try a larger value of the --backtrack option, such as --backtrack=30, in order to see if that will solve this conflict automatically. For more information, see MASKED PACKAGES section in the emerge man page or refer to the Gentoo Handbook. * Error: The above package list contains packages which cannot be * installed at the same time on the same system. (sys-fs/udev-207::gentoo, ebuild scheduled for merge) pulled in by >=sys-fs/udev-206-r2[abi_x86_32(-)?,abi_x86_64(-)?,abi_x86_x32(-)?,abi_x86_32(-)?,abi_x86_64(-)?,abi_mips_n32(-)?,abi_mips_n64(-)?,abi_mips_o32(-)?,gudev?,introspection?,kmod?,selinux?,static-libs?] (>=sys-fs/udev-206-r2[abi_x86_64(-),abi_x86_64(-),gudev,introspection,kmod]) required by (virtual/udev-206-r2::gentoo, installed) (sys-apps/systemd-204::gentoo, ebuild scheduled for merge) pulled in by >=sys-apps/systemd-44 required by (x11-misc/colord-1.0.3::gentoo, installed) >=sys-apps/systemd-31 required by (gnome-extra/gnome-screensaver-3.6.1::gentoo, installed) =sys-apps/systemd-204 sys-apps/systemd required by (sys-auth/polkit-0.112-r1::gentoo, installed) sys-apps/systemd required by (sys-apps/dbus-1.6.14::gentoo, installed) >=sys-apps/systemd-186 required by (sys-apps/accountsservice-0.6.34::gentoo, installed) >=sys-apps/systemd-31 required by (gnome-base/gnome-settings-daemon-3.6.4::gentoo, installed) >=sys-apps/systemd-200[gudev?,introspection?,keymap(+)?,kmod?,selinux?,static-libs(-)?] (>=sys-apps/systemd-200[gudev,introspection,keymap(+),kmod]) required by (virtual/udev-200::gentoo, ebuild scheduled for merge) >=sys-apps/systemd-39 required by (media-sound/pulseaudio-4.0::gentoo, installed) >=sys-apps/systemd-186[pam] required by (gnome-base/gdm-3.6.2-r1::gentoo, installed) >=sys-apps/systemd-44-r1[pam] required by (sys-auth/pambase-20120417-r2::gentoo, installed) >=sys-apps/systemd-38 required by (gnome-extra/gnome-system-monitor-3.6.1::gentoo, installed) sys-apps/systemd required by (gnome-base/gvfs-1.14.2::gentoo, installed) >=sys-apps/systemd-31 required by (gnome-base/gnome-control-center-3.6.3-r1::gentoo, installed) >=sys-apps/systemd-197 required by (sys-fs/udisks-2.1.1::gentoo, installed) >=sys-apps/systemd-183 required by (gnome-base/gnome-session-3.6.2-r2::gentoo, installed) >=sys-apps/systemd-31 required by (gnome-base/gnome-shell-3.6.3.1::gentoo, installed) >=sys-apps/systemd-183 required by (net-misc/networkmanager-0.9.8.4::gentoo, installed) >=sys-apps/systemd-200 required by (sys-power/upower-0.9.21::gentoo, installed) For more information about Blocked Packages, please refer to the following section of the Gentoo Linux x86 Handbook (architecture is irrelevant): http://www.gentoo.org/doc/en/handbook/handbook-x86.xml?full=1#blocked livecd package.mask # =========== output from emerge with package.mask/systemd ========= livecd package.mask # emerge -1 =virtual/udev-200 =sys-apps/systemd-204 These are the packages that would be merged, in reverse order: Calculating dependencies... done! [ebuild UD ] sys-apps/systemd-204 [207-r2] USE="acl firmware-loader gudev introspection keymap%* kmod pam policykit tcpd -audit -cryptsetup -doc -gcrypt -http -lzma -openrc -python -qrcode (-selinux) -static-libs% {-test} -vanilla -xattr (-filecaps%*)" ABI_X86="(-32%) (-64%*) (-x32%)" PYTHON_SINGLE_TARGET="python2_7" PYTHON_TARGETS="python2_7" 2,136 kB [nomerge ] gnome-base/gnome-3.6.2:2.0 USE="bluetooth cdr cups extras fallback -accessibility" [nomerge ] gnome-base/gnome-shell-3.6.3.1 USE="bluetooth i18n networkmanager systemd" PYTHON_TARGETS="python2_7 -python2_6" [nomerge ] net-wireless/gnome-bluetooth-3.6.1:2/11 USE="introspection -debug -sendto" [nomerge ] app-mobilephone/obexd-0.46 USE="eds usb -nokia -server" [nomerge ] dev-libs/openobex-1.5 USE="bluetooth usb -debug -irda -syslog" [nomerge ] virtual/libusb-0-r1 ABI_X86="(64) -32 (-x32)" [nomerge ] dev-libs/libusb-compat-0.1.5-r2 USE="-debug -examples -static-libs" ABI_X86="(64) -32 (-x32)" [nomerge ] virtual/libusb-1-r1:1 ABI_X86="(64) -32 (-x32)" [nomerge ] dev-libs/libusbx-1.0.17:1 USE="udev -debug -doc -examples -static-libs {-test}" ABI_X86="(64) -32 (-x32)" [nomerge ] virtual/udev-206-r2 USE="gudev introspection kmod (-selinux) -static-libs" ABI_X86="(64) -32 (-x32)" [nomerge ] sys-fs/udev-207 USE="acl firmware-loader gudev introspection kmod openrc -doc (-selinux) -static-libs" ABI_X86="(64) -32 (-x32)" [ebuild N ] sys-fs/udev-init-scripts-26 5 kB [ebuild N ] sys-fs/udev-207 USE="acl firmware-loader gudev introspection kmod openrc -doc (-selinux) -static-libs" ABI_X86="(64) -32 (-x32)" 2 kB [ebuild UD ] virtual/udev-200 [206-r2] USE="gudev hwdb%* introspection keymap%* kmod (-selinux) -static-libs" ABI_X86="(-32%) (-64%*) (-x32%)" 0 kB [blocks B ] sys-apps/systemd ("sys-apps/systemd" is blocking sys-fs/udev-207) [blocks B ] sys-fs/udev ("sys-fs/udev" is blocking sys-apps/systemd-207-r2, sys-apps/systemd-204) Total: 4 packages (2 downgrades, 2 new), Size of downloads: 2,142 kB Conflict: 2 blocks (2 unsatisfied) !!! Multiple package instances within a single package slot have been pulled !!! into the dependency graph, resulting in a slot conflict: virtual/udev:0 (virtual/udev-200::gentoo, ebuild scheduled for merge) pulled in by =virtual/udev-200[gudev] required by (dev-libs/libgusb-0.1.6::gentoo, installed) (and 27 more with the same problem) (virtual/udev-206-r2::gentoo, installed) pulled in by >=virtual/udev-200[abi_x86_32(-)?,abi_x86_64(-)?,abi_x86_x32(-)?,abi_x86_32(-)?,abi_x86_64(-)?,abi_mips_n32(-)?,abi_mips_n64(-)?,abi_mips_o32(-)?] required by (dev-libs/libusbx-1.0.17::gentoo, installed) >=virtual/udev-206-r2 required by (sys-fs/udev-207::gentoo, ebuild scheduled for merge) It may be possible to solve this problem by using package.mask to prevent one of those packages from being selected. However, it is also possible that conflicting dependencies exist such that they are impossible to satisfy simultaneously. If such a conflict exists in the dependencies of two different packages, then those packages can not be installed simultaneously. You may want to try a larger value of the --backtrack option, such as --backtrack=30, in order to see if that will solve this conflict automatically. For more information, see MASKED PACKAGES section in the emerge man page or refer to the Gentoo Handbook. * Error: The above package list contains packages which cannot be * installed at the same time on the same system. (sys-fs/udev-207::gentoo, ebuild scheduled for merge) pulled in by >=sys-fs/udev-206-r2[abi_x86_32(-)?,abi_x86_64(-)?,abi_x86_x32(-)?,abi_x86_32(-)?,abi_x86_64(-)?,abi_mips_n32(-)?,abi_mips_n64(-)?,abi_mips_o32(-)?,gudev?,introspection?,kmod?,selinux?,static-libs?] (>=sys-fs/udev-206-r2[abi_x86_64(-),abi_x86_64(-),gudev,introspection,kmod]) required by (virtual/udev-206-r2::gentoo, installed) (sys-apps/systemd-204::gentoo, ebuild scheduled for merge) pulled in by >=sys-apps/systemd-44 required by (x11-misc/colord-1.0.3::gentoo, installed) >=sys-apps/systemd-31 required by (gnome-extra/gnome-screensaver-3.6.1::gentoo, installed) =sys-apps/systemd-204 sys-apps/systemd required by (sys-auth/polkit-0.112-r1::gentoo, installed) sys-apps/systemd required by (sys-apps/dbus-1.6.14::gentoo, installed) >=sys-apps/systemd-186 required by (sys-apps/accountsservice-0.6.34::gentoo, installed) >=sys-apps/systemd-31 required by (gnome-base/gnome-settings-daemon-3.6.4::gentoo, installed) >=sys-apps/systemd-200[gudev?,introspection?,keymap(+)?,kmod?,selinux?,static-libs(-)?] (>=sys-apps/systemd-200[gudev,introspection,keymap(+),kmod]) required by (virtual/udev-200::gentoo, ebuild scheduled for merge) >=sys-apps/systemd-39 required by (media-sound/pulseaudio-4.0::gentoo, installed) >=sys-apps/systemd-186[pam] required by (gnome-base/gdm-3.6.2-r1::gentoo, installed) >=sys-apps/systemd-44-r1[pam] required by (sys-auth/pambase-20120417-r2::gentoo, installed) >=sys-apps/systemd-38 required by (gnome-extra/gnome-system-monitor-3.6.1::gentoo, installed) sys-apps/systemd required by (gnome-base/gvfs-1.14.2::gentoo, installed) >=sys-apps/systemd-31 required by (gnome-base/gnome-control-center-3.6.3-r1::gentoo, installed) >=sys-apps/systemd-197 required by (sys-fs/udisks-2.1.1::gentoo, installed) >=sys-apps/systemd-183 required by (gnome-base/gnome-session-3.6.2-r2::gentoo, installed) >=sys-apps/systemd-31 required by (gnome-base/gnome-shell-3.6.3.1::gentoo, installed) >=sys-apps/systemd-183 required by (net-misc/networkmanager-0.9.8.4::gentoo, installed) >=sys-apps/systemd-200 required by (sys-power/upower-0.9.21::gentoo, installed) For more information about Blocked Packages, please refer to the following section of the Gentoo Linux x86 Handbook (architecture is irrelevant): http://www.gentoo.org/doc/en/handbook/handbook-x86.xml?full=1#blocked livecd package.mask #