package/python3: drop !uclibc || headers 5.1 dependency

The following dependency:

  depends on !BR2_TOOLCHAIN_USES_UCLIBC || BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_1

was added by commit d63e207eb869063f82c867658676c2903beb08cb, which
bumped python3 from 3.12.9 to 3.13.2.

The commit message doesn't state it, but this dependency was introduced
because uClibc without time64 support (i.e. with kernel headers < 5.1)
causes a runtime assertion in Python [1]:

OverflowError: timestamp too large to convert to C PyTime_t

The problem is that this dependency has not been propagated to reverse
dependencies, causing this kind of kconfig warnings:

WARNING: unmet direct dependencies detected for BR2_PACKAGE_PYTHON3
  Depends on [n]: BR2_USE_WCHAR [=y] && BR2_USE_MMU [=y] && BR2_TOOLCHAIN_HAS_THREADS [=y] && !BR2_STATIC_LIBS [=n] && (!BR2_TOOLCHAIN_USES_UCLIBC [=y] || BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_1 [=n])
  Selected by [y]:
  - BR2_PACKAGE_AVOCADO [=y] && BR2_USE_WCHAR [=y] && BR2_USE_MMU [=y] && BR2_TOOLCHAIN_HAS_THREADS [=y] && !BR2_STATIC_LIBS [=n]
  - BR2_PACKAGE_LIBSIGROKDECODE [=y] && BR2_USE_WCHAR [=y] && BR2_TOOLCHAIN_HAS_THREADS [=y] && BR2_USE_MMU [=y] && !BR2_STATIC_LIBS [=n]
  - BR2_PACKAGE_OPKG_UTILS [=y] && BR2_PACKAGE_BUSYBOX [=y] && BR2_USE_MMU [=y] && BR2_USE_WCHAR [=y] && BR2_TOOLCHAIN_HAS_THREADS [=y] && !BR2_STATIC_LIBS [=n]

However, propagating this dependency to all reverse dependencies of
python3 would be pretty annoying, especially as the dependency is kind
of "clunky". A configuration with uClibc and kernel headers < 5.1 is
such a corner case that it does not merit such complexity.

A later commit will check for this corner case at build time (while
allowing it in the .config). For now, already drop the dependency in
Config.in.

Cc: Vincent Fazio <vfazio@xes-inc.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Arnout Vandecappelle <arnout@rnout.be>

[1] https://gitlab.com/buildroot.org/buildroot/-/issues/95#note_2348479811

package/python3/Config.in

@@ -1,6 +1,6 @@
-comment "python3 needs a toolchain w/ wchar, threads, dynamic library, time64 support"
+comment "python3 needs a toolchain w/ wchar, threads, dynamic library"
 	depends on BR2_USE_MMU
-	depends on !BR2_USE_WCHAR || !BR2_TOOLCHAIN_HAS_THREADS || BR2_STATIC_LIBS || (!BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_1 && BR2_TOOLCHAIN_USES_UCLIBC)
+	depends on !BR2_USE_WCHAR || !BR2_TOOLCHAIN_HAS_THREADS || BR2_STATIC_LIBS
 
 config BR2_PACKAGE_PYTHON3
 	bool "python3"
@@ -9,7 +9,6 @@ config BR2_PACKAGE_PYTHON3
 	depends on BR2_USE_MMU
 	depends on BR2_TOOLCHAIN_HAS_THREADS # libffi
 	depends on !BR2_STATIC_LIBS
-	depends on !BR2_TOOLCHAIN_USES_UCLIBC || BR2_TOOLCHAIN_HEADERS_AT_LEAST_5_1  # need time64 support in uclibc
 	select BR2_PACKAGE_LIBFFI
 	select BR2_PACKAGE_BLUEZ5_UTILS_HEADERS if BR2_PACKAGE_BLUEZ5_UTILS
 	select BR2_PACKAGE_HOST_PYTHON3