gnu: mig: Update to 1.8+git20230520.

This reinstates 999a6ac0cf, which was
reverted by a041bbb4bf, but without
resorting to 'git-fetch'.

* gnu/packages/hurd.scm (mig): Update to 1.8+git20220827.
[source]: Remove patch.
* gnu/packages/patches/mig-cpu.h-generation.patch: Delete.
* gnu/local.mk (dist_patch_DATA): Remove it.

gnu/local.mk

@@ -1594,7 +1594,6 @@ dist_patch_DATA =						\
   %D%/packages/patches/mia-vtk9.patch				\
   %D%/packages/patches/mia-vtk92.patch				\
   %D%/packages/patches/mia-vtk-version.patch			\
-  %D%/packages/patches/mig-cpu.h-generation.patch 		\
   %D%/packages/patches/mingw-w64-6.0.0-gcc.patch		\
   %D%/packages/patches/mingw-w64-dlltool-temp-prefix.patch	\
   %D%/packages/patches/mingw-w64-reproducible-gendef.patch	\

gnu/packages/hurd.scm

@@ -91,10 +91,10 @@ (define-public gnumach-headers
 (define-public mig
   (package
     (name "mig")
-    (version "1.8+git20220827")
+    (version "1.8+git20230520")
     (source (origin
               (method url-fetch)
-              ;; XXX: Version 2.35 of glibc can only be built with an
+              ;; XXX: Versions 2.35 and 2.37 of glibc can only be built with an
               ;; unreleased version of MiG:
               ;; <https://lists.gnu.org/archive/html/bug-hurd/2023-03/msg00025.html>.
               ;; It cannot be fetched from Git though, as the extra dependency
@@ -103,8 +103,7 @@ (define-public mig
                                   version ".tar.gz"))
               (sha256
                (base32
-                "163d37s9lscd6zxyfng421m9nl857464mgjj90xsrcl5ykbng5p2"))
-              (patches (search-patches "mig-cpu.h-generation.patch"))))
+                "1ap31jd9jkvvz3vb88hg19cyqmqzmra724yl1xhcrv7gcgnan7d9"))))
     (build-system gnu-build-system)
     ;; Flex is needed both at build and run time.
     (inputs (list gnumach-headers flex))

gnu/packages/patches/mig-cpu.h-generation.patch

@@ -1,16 +0,0 @@
-Backport MiG commit 73fbf2504ae606dda81372701a67dad6fee0865e:
-
-  From: Flavio Cruz <flaviocruz@gmail.com>
-  Subject: Generate cpu.h with -ffreestanding
-
---- a/Makefile.in	2023-03-26 23:02:51.384318331 +0200
-+++ b/Makefile.in	2023-03-26 23:03:03.300329369 +0200
-@@ -1051,7 +1051,7 @@ uninstall-am: uninstall-binSCRIPTS unins
- .sym.symc:
- 	$(AWK_V) $(AWK) -f $(srcdir)/gensym.awk $< > $@
- .symc.symo:
--	$(AM_V_CC) $(TARGET_CC) -S $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) -x c -o $@ $<
-+	$(AM_V_CC) $(TARGET_CC) -S $(TARGET_CPPFLAGS) $(TARGET_CFLAGS) -ffreestanding -x c -o $@ $<
- .symo.h:
- 	$(AM_V_GEN) sed -e '/^[^*].*$$/d' -e 's/^[*]/#define/' -e 's/mAgIc[^-0-9]*//' \
- 	    $< > $@