all: Switch to new preview build versioning scheme.v1.22.0-preview

See https://github.com/micropython/micropython/issues/12127 for details.

Previously at the point when a release is made, we update mpconfig.h
and set a git tag. i.e. the version increments at the release.

Now the version increments immediately after the release. The workflow is:
1. Final commit in the cycle updates mpconfig.h to set (X, Y, 0, 0) (i.e.
   clear the pre-release state).
2. This commit is tagged "vX.Y.0".
3. First commit for the new cycle updates mpconfig.h to set (X, Y+1, 0, 1)
   (i.e. increment the minor version, set the pre-release state).
4. This commit is tagged "vX.Y+1.0-preview".

The idea is that a nightly build is actually a "preview" of the _next_
release. i.e. any documentation describing the current release may not
actually match the nightly build. So we use "preview" as our semver
pre-release identifier.

Changes in this commit:
 - Add MICROPY_VERSION_PRERELEASE to mpconfig.h to allow indicating that
   this is not a release version.
 - Remove unused MICROPY_VERSION integer.
 - Append "-preview" to MICROPY_VERSION_STRING when the pre-release state
   is set.
 - Update py/makeversionhdr.py to no longer generate MICROPY_GIT_HASH.
 - Remove the one place MICROPY_GIT_HASH was used (it can use
   MICROPY_GIT_TAG instead).
 - Update py/makeversionhdr.py to also understand
   MICROPY_VERSION_PRERELEASE in mpconfig.h.
 - Update py/makeversionhdr.py to convert the git-describe output into
   semver-compatible "X.Y.Z-preview.N.gHASH".
 - Update autobuild.sh to generate filenames using the new scheme.
 - Update remove_old_firmware.py to match new scheme.
 - Update mpremote's pyproject.toml to handle the "-preview" suffix in the
   tag. setuptools_scm maps to this "rc0" to match PEP440.
 - Fix docs heading where it incorrectly said "vvX.Y.Z" for release docs.

This work was funded through GitHub Sponsors.

Signed-off-by: Jim Mussared <jim.mussared@gmail.com>

1 files changed, 14 insertions, 6 deletions

diff --git a/py/modsys.c b/py/modsys.c
index 38105ee21..e40542467 100644
--- a/py/modsys.c
+++ b/py/modsys.c
@@ -59,16 +59,24 @@ const mp_print_t mp_sys_stdout_print = {&mp_sys_stdout_obj, mp_stream_write_adap
 STATIC const MP_DEFINE_STR_OBJ(mp_sys_version_obj, "3.4.0; " MICROPY_BANNER_NAME_AND_VERSION);
 
 // version_info - Python language version that this implementation conforms to, as a tuple of ints
-#define I(n) MP_OBJ_NEW_SMALL_INT(n)
-// TODO: CPython is now at 5-element array, but save 2 els so far...
-STATIC const mp_obj_tuple_t mp_sys_version_info_obj = {{&mp_type_tuple}, 3, {I(3), I(4), I(0)}};
+// TODO: CPython is now at 5-element array (major, minor, micro, releaselevel, serial), but save 2 els so far...
+STATIC const mp_rom_obj_tuple_t mp_sys_version_info_obj = {{&mp_type_tuple}, 3, {MP_ROM_INT(3), MP_ROM_INT(4), MP_ROM_INT(0)}};
 
 // sys.implementation object
 // this holds the MicroPython version
-STATIC const mp_obj_tuple_t mp_sys_implementation_version_info_obj = {
+STATIC const mp_rom_obj_tuple_t mp_sys_implementation_version_info_obj = {
     {&mp_type_tuple},
-    3,
-    { I(MICROPY_VERSION_MAJOR), I(MICROPY_VERSION_MINOR), I(MICROPY_VERSION_MICRO) }
+    4,
+    {
+        MP_ROM_INT(MICROPY_VERSION_MAJOR),
+        MP_ROM_INT(MICROPY_VERSION_MINOR),
+        MP_ROM_INT(MICROPY_VERSION_MICRO),
+        #if MICROPY_VERSION_PRERELEASE
+        MP_ROM_QSTR(MP_QSTR_preview),
+        #else
+        MP_ROM_QSTR(MP_QSTR_),
+        #endif
+    }
 };
 STATIC const MP_DEFINE_STR_OBJ(mp_sys_implementation_machine_obj, MICROPY_BANNER_MACHINE);
 #if MICROPY_PERSISTENT_CODE_LOAD