gnu: python-fixtures: Add missing dependency.

* gnu/packages/check.scm (python-fixtures)[propagated-inputs]: Add
python-extras.

gnu: python-fixtures-bootstrap: Add missing dependency.

* gnu/packages/check.scm (python-fixtures-bootstrap)[propagated-inputs]:
Add python-extras.

gnu: python-testtools: Remove unused dependency.

* gnu/packages/check.scm (python-testtools)[propagated-inputs]: Remove
python-extras.

gnu: python-testtools-bootstrap: Update to 2.6.0.

Supports Python 3.10 and 3.11.

* gnu/packages/check.scm (python-testtools-bootstrap): Update to 2.6.0.
[propagated-inputs]: Remove python-extras, which is not a dependency.

gnu: guile: Skip OOM test on powerpc64le-linux.

* gnu/packages/guile/scm (guile-3.0)[arguments]: Add phase when building
for powerpc64le-linux disabling the OOM test.

gnu: libgc: Fix building on powerpc-linux.

* gnu/pakcages/bdw-gc.scm (libgc)[arguments]: When building for
powerpc-linux add a make-flag to not protect virtual-dirty bits.

gnu: libgc: Fix building on powerpc64le-linux.

* gnu/packages/bdw-gc.scm (libgc)[arguments]: Add a make-flag when
building for powerpc64le-linux to disable using SDB (soft-dirty bits).

gnu: python-trio: Run pytest on tests directory only.

Failing to do so causes cryptic module load errors.

* gnu/packages/python-xyz.scm (python-trio)[arguments]: Add path parameter
to invoke.

gnu: guile: Fix 'posix_spawn' usage for GNU/Hurd.

* gnu/packages/guile.scm (guile-3.0)[arguments]: Add
'patch-posix-spawn-usage' phase.
* gnu/packages/patches/guile-hurd-posix-spawn.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.

gnu: guile-readline: Switch to gexps.

* gnu/packages/guile.scm (make-guile-readline): Switch to gexps.

gnu: guile: Switch to gexps.

* gnu/packages/guile.scm (guile-3.0)[arguments]: Switch to gexps.
(guile-next)[arguments]: Likewise.

gnu: guile-static: Switch to gexps.

* gnu/packages/make-bootstrap.scm (make-guile-static): Switch to gexps.

gnu: linux-pam: Allow compilation on GNU/Hurd.

* gnu/packages/linux.scm (linux-pam)[arguments]: Add #:phases.

gnu: linux-pam: Switch to gexps.

* gnu/packages/linux.scm (linux-pam)[arguments]: Switch to gexps.

system: hurd: Use shepherd-0.8 in the package list.

* gnu/system/hurd.scm (%base-packages/hurd): Change shepherd to shepherd-0.8,
since the former uses fibers, and thus conflicts with the shepherd-0.8 we use in
the default essential services.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

gnu: mig/32-bit: Remove.

* gnu/packages/hurd.scm (mig/32-bit): Remove unneeded variant.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

gnu: hurd: Update DDE and use libdde_linux26.

* gnu/packages/hurd.scm (dde-sources): Update.
(hurd): Build libdde_linux26 and install it.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

gnu: gnumach, hurd-headers, hurd: Switch to using cross-mig.

* gnu/packages/hurd.scm (gnumach, hurd-headers, hurd): Switch to cross-mig when
cross-building.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

gnu: hurd: Remove useless glibc/hurd-headers input.

* gnu/packages/hurd.scm (hurd): Do it.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

gnu: hurd: Update to 3ff7053.

* gnu/packages/hurd.scm (hurd-headers): Do it.  Also backport some patches to
make it build, and remove older patches.  Also stop pretending we're on
i586-pc-gnu.
(hurd): Remove unneeded patches.
* gnu/packages/patches/hurd-add-without-rump-configure-option.patch:
* gnu/packages/patches/hurd-fix-types-of-read-write-and-readables-methods-2.patch:
* gnu/packages/patches/hurd-fix-types-of-read-write-and-readables-methods.patch:
New files.
* gnu/packages/patches/hurd-cross.patch:
* gnu/packages/patches/hurd-xattr.patch: Delete files.
* gnu/local.mk (dist_patch_DATA): Register and unregister them.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>