Re: [yocto] [meta-selinux] Dependency loop help with selinux userspace/python3/util-linux

["Joe MacDonald" <joe@deserted.net>]

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[Re: [yocto] [meta-selinux] Dependency loop help with selinux userspace/python3/util-linux] On 19.12.11 (Wed 09:21) Peter Morrow via Lists.Yoctoproject.Org wrote:

> On Wed, 2019-12-11 at 10:18 +0800, Yi Zhao via Lists.Yoctoproject.Org
> wrote:
> > 
> > 
> > On 12/5/19 9:46 PM, Peter Morrow via Lists.Yoctoproject.Org wrote:
> > 
> > > Hi Folks,
> > > 
> > > I'm trying to upgrade the meta-selinux layer to use a newer version
> > > of
> > > the selinux userspace tools (from 2.8 to 2.9), in doing so these
> > > newer
> > > userspace tools now depend on python3 instead of python2.  This
> > > unfortunately has created a build time dependency loop in yocto:
> > > 
> > > python3 --> util-linux --> libselinux --> python3 (used to be
> > > python2
> > > with 2.8 selinux userspace).
> > 
> > 
> > Hi Peter,
> > I had sent a series patches to update selinux usersapce tools from
> > 2.8 ot 2.9: 
> > https://www.yoctoproject.org/pipermail/yocto/2019-November/047329.html
> > After switch to python3, there is a loop dependency error with
> > libselinux-python package when build libselinux. So I split the
> > original libselinux recipe into  libselinux and libselinux-python.
> > You can refer my patchset.
> 
> Hi Yi,
> 
> Great!  Is there anything stopping these patches being merged?

No, no issue as far as I can tell, I'm preparing another merge to master
in the next couple of days.  This includes Yi's patches, my update
refpolicy purge feature and a few other things currently pending on the
list from the last few weeks.

-J.

> Thanks,
> Peter.
> 
> 
> > 
> > 
> > //Yi
> > 
> > 
> > > Running "bitbake libselinux" results in a pile of loops, the one
> > > below
> > > illustrates the point.
> > > 
> > > ERROR:
> > > Dependency loop #1 found:
> > >   Task /workspace/git/yocto-selinux/meta-selinux/recipes-
> > > security/selinux/libselinux_2.9.bb:do_package (dependent Tasks
> > > ['gcc-
> > > runtime_9.2.bb:do_packagedata', 'libsepol_2.9.bb:do_packagedata',
> > > 'rpm_4.14.2.1.bb:do_populate_sysroot',
> > > 'glibc_2.30.bb:do_packagedata',
> > > 'python3_3.7.5.bb:do_packagedata',
> > > 'libpcre_8.43.bb:do_packagedata',
> > > 'pseudo_git.bb:do_populate_sysroot',
> > > 'dwarfsrcfiles.bb:do_populate_sysroot',
> > > 'libselinux_2.9.bb:do_install'])
> > >   Task /workspace/git/yocto-selinux/meta-selinux/recipes-
> > > security/selinux/libselinux_2.9.bb:do_packagedata (dependent Tasks
> > > ['libselinux_2.9.bb:do_package'])
> > >   Task /workspace/git/yocto-selinux/poky/meta/recipes-
> > > extended/pam/libpam_1.3.1.bb:do_package (dependent Tasks ['gcc-
> > > runtime_9.2.bb:do_packagedata',
> > > 'rpm_4.14.2.1.bb:do_populate_sysroot',
> > > 'glibc_2.30.bb:do_packagedata', 'libselinux_2.9.bb:do_packagedata',
> > > 'flex_2.6.0.bb:do_packagedata',
> > > 'pseudo_git.bb:do_populate_sysroot',
> > > 'libxcrypt_4.4.8.bb:do_packagedata', 'libpam_1.3.1.bb:do_install',
> > > 'dwarfsrcfiles.bb:do_populate_sysroot',
> > > 'cracklib_2.9.5.bb:do_packagedata', 'libtool-
> > > cross_2.4.6.bb:do_packagedata'])
> > >   Task /workspace/git/yocto-selinux/poky/meta/recipes-
> > > extended/pam/libpam_1.3.1.bb:do_packagedata (dependent Tasks
> > > ['libpam_1.3.1.bb:do_package'])
> > >   Task /workspace/git/yocto-selinux/poky/meta/recipes-core/util-
> > > linux/util-linux_2.34.bb:do_package (dependent Tasks ['gcc-
> > > runtime_9.2.bb:do_packagedata',
> > > 'rpm_4.14.2.1.bb:do_populate_sysroot',
> > > 'bash-completion_2.9.bb:do_packagedata',
> > > 'zlib_1.2.11.bb:do_packagedata', 'glibc_2.30.bb:do_packagedata',
> > > 'libselinux_2.9.bb:do_packagedata',
> > > 'pseudo_git.bb:do_populate_sysroot',
> > > 'ncurses_6.1+20190803.bb:do_packagedata',
> > > 'libxcrypt_4.4.8.bb:do_packagedata', 'libcap-
> > > ng_0.7.9.bb:do_packagedata', 'opkg-utils_0.4.1.bb:do_packagedata',
> > > 'libpam_1.3.1.bb:do_packagedata', 'util-
> > > linux_2.34.bb:do_install_ptest_base',
> > > 'dwarfsrcfiles.bb:do_populate_sysroot', 'util-
> > > linux_2.34.bb:do_install', 'libtool-
> > > cross_2.4.6.bb:do_packagedata'])
> > >   Task /workspace/git/yocto-selinux/poky/meta/recipes-core/util-
> > > linux/util-linux_2.34.bb:do_packagedata (dependent Tasks ['util-
> > > linux_2.34.bb:do_package'])
> > >   Task /workspace/git/yocto-selinux/poky/meta/recipes-
> > > devtools/python/python3_3.7.5.bb:do_package (dependent Tasks
> > > ['xz_5.2.4.bb:do_packagedata', 'bzip2_1.0.8.bb:do_packagedata',
> > > 'gdbm_1.18.1.bb:do_packagedata', 'libnsl2_git.bb:do_packagedata',
> > > 'gcc-
> > > runtime_9.2.bb:do_packagedata',
> > > 'rpm_4.14.2.1.bb:do_populate_sysroot',
> > > 'python3_3.7.5.bb:do_install', 'libffi_3.3~rc0.bb:do_packagedata',
> > > 'pseudo_git.bb:do_populate_sysroot',
> > > 'sqlite3_3.29.0.bb:do_packagedata',
> > > 'openssl_1.1.1d.bb:do_packagedata',
> > > 'libtirpc_1.1.4.bb:do_packagedata',
> > > 'zlib_1.2.11.bb:do_packagedata',
> > > 'glibc_2.30.bb:do_packagedata',
> > > 'libxcrypt_4.4.8.bb:do_packagedata',
> > > 'python3_3.7.5.bb:do_install_ptest_base', 'util-
> > > linux_2.34.bb:do_packagedata', 'opkg-
> > > utils_0.4.1.bb:do_packagedata',
> > > 'readline_8.0.bb:do_packagedata',
> > > 'dwarfsrcfiles.bb:do_populate_sysroot', 'libtool-
> > > cross_2.4.6.bb:do_packagedata'])
> > >   Task /workspace/git/yocto-selinux/poky/meta/recipes-
> > > devtools/python/python3_3.7.5.bb:do_packagedata (dependent Tasks
> > > ['python3_3.7.5.bb:do_package'])
> > > 
> > > Python3 (3.7.5) appears to depend on util-linux for libuuid
> > > support, so
> > > I don't think anything can be done with regards to
> > > this.  libselinux
> > > now depends on python3 as of 2.9, so again not much can be done
> > > here. 
> > > It's proving a bit harder to track down the util-linux dependency
> > > on
> > > libselinux but I believe this is a hard depdency as well.
> > > 
> > > I'm using the master branch of both poky and meta-selinux for
> > > testing,
> > > my local.conf file has the following to enable testing:
> > > 
> > > DISTRO_FEATURES_append=" acl xattr pam selinux"
> > > 
> > > The crux of the libselinux recipe change is really just changing
> > > the
> > > python2 deps over to python3 ones in meta-selinux/recipes-
> > > security/selinux/libselinux.inc.
> > > 
> > > At this point I'd be trying to look for places where recipes can be
> > > split out to remove the loop, but nothing jumps out at me.
> > > 
> > > Can anyone offer any advice or pointers on how to get around
> > > this?  Or
> > > am I just stuffed?
> > > 
> > > Many Thanks,
> > > Peter.
> > > 
> > > 
> > > 
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-- 
-Joe MacDonald.
:wq

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