lib.version.Dependency.__version_boundaries(): Use Version.next()

Use Version.next() in __version_boundaries, which steps the last existing
part, so '= 1.0' spans '>= 1.0, < 1.1'.

Tests written by AI.

Assisted-by: unsloth/Qwen3.8-27B-GGUF:Q4_K_M with pi.dev v0.85.1
Signed-off-by: Jan Lindemann <jan@janware.com>

src/python/jw/pkg/lib/version/Dependency.py

@@ -74,13 +74,14 @@ class Dependency:  # export
             return (specified, )
         ret: list[Boundary] = []
         match specified.op:
-            case '>' | '>=':
-                ret.append(specified)
-                ret.append(Boundary('<', specified.version.next_binary_incompatible))
             case '=':
+                try:
+                    next_version = specified.version.next
+                except Version.Error:
+                    return (specified, )
                 ret.append(Boundary('>=', specified.version))
-                ret.append(Boundary('<', specified.version.next_binary_incompatible))
-            case '<' | '<=':
+                ret.append(Boundary('<', next_version))
+            case '>' | '>=' | '<' | '<=':
                 ret.append(specified)
             case _:
                 self.__raise(
@@ -150,8 +151,9 @@ class Dependency:  # export
         NAMES_ONLY renders the name alone. With untemplated = False the
         VERSION, VERSION-REVISION and REVISION macros are kept as
         written instead of resolved. include_revision = False drops the
-        revision of VERSION specs. as_range expands a boundary that
-        pins a full version into the range it spans. no_subpackages
+        revision of VERSION specs. as_range expands a = boundary that
+        does not pin a full version into the range it spans; other
+        operators pass through unchanged. no_subpackages
         renders the base name, quote wraps the result in the given
         string.
         """

test/unit/python/jw/pkg/lib/version/test.py

@@ -109,7 +109,7 @@ assert d.constraint_str() == 'foo = 1.2.3'
 assert d.constraint_str() == 'foo = 1.2.3'
 assert calls == ['foo']
 
-# as_range expands a non-full boundary into the range it spans
+# as_range expands a non-full = boundary into the range it spans
 d = Dependency('foo = VERSION-REVISION', app.get_version)
 assert d.constraint_str(as_range = True) == 'foo = 1.2.3-45'
 d = Dependency('foo >= VERSION-REVISION', app.get_version)
@@ -123,14 +123,22 @@ assert constraint == 'foo = VERSION-REVISION'
 # A full version stays exact; a non-full one expands
 d = Dependency('foo = VERSION', app.get_version)
 assert d.constraint_str(as_range = True) == 'foo >= 1.2.3, foo < 1.2.4'
+# Operators other than = pass through unchanged
 d = Dependency('foo >= VERSION', app.get_version)
-assert d.constraint_str(as_range = True) == 'foo >= 1.2.3, foo < 1.2.4'
-# '<' and '<=' are not expanded
+assert d.constraint_str(as_range = True) == 'foo >= 1.2.3'
 d = Dependency('foo <= VERSION', app.get_version)
 assert d.constraint_str(as_range = True) == 'foo <= 1.2.3'
-# The bound steps a micro, so a tripartite core expands
+# The bound steps the last part, whatever it is
+d = Dependency('foo = 1.0', app.get_version)
+assert d.constraint_str(as_range = True) == 'foo >= 1.0, foo < 1.1'
 d = Dependency('foo = 1.2.3', app.get_version)
 assert d.constraint_str(as_range = True) == 'foo >= 1.2.3, foo < 1.2.4'
+d = Dependency('foo = 1.2.3rc1', app.get_version)
+assert d.constraint_str(as_range = True) == 'foo >= 1.2.3rc1, foo < 1.2.4'
+# A last part without leading digits cannot be stepped, so the pin
+# stays exact
+d = Dependency('foo = 1.0-rc1', app.get_version)
+assert d.constraint_str(as_range = True) == 'foo = 1.0-rc1'
 # Default syntax is SEM_VER
 d = Dependency('foo < 2.0')
 assert d.constraint_str(untemplated = False) == 'foo < 2.0'