Update nanobind to 2.8.0

Also, improve meson.build as follows:
+ Require robin-map version >=1.4.0
+ Only strip output objects if not debug build
+ Add variable 'stubgen' to nanobind_dep

Author: hpkfft

releases.json

@@ -2875,6 +2875,7 @@
       "nanobind"
     ],
     "versions": [
+      "2.8.0-1",
       "2.7.0-4",
       "2.7.0-3",
       "2.7.0-2",

subprojects/nanobind.wrap

@@ -1,8 +1,8 @@
 [wrap-file]
-directory = nanobind-2.7.0
-source_url = https://github.com/wjakob/nanobind/archive/refs/tags/v2.7.0.tar.gz
-source_filename = nanobind-2.7.0.tar.gz
-source_hash = 6c8c6bf0435b9d8da9312801686affcf34b6dbba142db60feec8d8e220830499
+directory = nanobind-2.8.0
+source_url = https://github.com/wjakob/nanobind/archive/refs/tags/v2.8.0.tar.gz
+source_filename = nanobind-2.8.0.tar.gz
+source_hash = 17506f1ef5c92491183ab28242fa4f658d9625fe4f91ccd1d1358cb6e5f5acb6
 patch_directory = nanobind
 
 [provide]

subprojects/packagefiles/nanobind/meson.build

@@ -18,16 +18,16 @@ py_mod = import('python')
 py = py_mod.find_installation()
 py_dep = py.dependency()
 
-robin_map_dep = dependency('robin-map')
+robin_map_dep = dependency(
+  'robin-map',
+  version: '>=1.4.0',
+)
 
 incdir = include_directories('include')
 
 # Arguments are derived from nanobind_build_library() in CMake configuration.
 dep_compile_args = []
-
-if not get_option('debug')
-  dep_compile_args += ['-DNB_COMPACT_ASSERTIONS']
-endif
+dep_link_args = []
 
 compiler = meson.get_compiler('cpp')
 if compiler.get_argument_syntax() == 'msvc'
@@ -42,19 +42,26 @@ if freethreaded
   dep_compile_args += ['-DNB_FREE_THREADED']
 endif
 
-# The following, from nanobind_strip(), applies both to the nanobind shared
-# library (if it's built) and to the developer's extension:
-dep_link_args = []
+if not get_option('debug')
+  dep_compile_args += ['-DNB_COMPACT_ASSERTIONS']
+
+  # The following, from nanobind_strip(), applies both to the nanobind shared
+  # library (if it's built) and to the developer's extension:
+  if host_machine.system() == 'darwin'
+    dep_link_args += ['-Wl,-dead_strip', '-Wl,-x', '-Wl,-S']
+  elif host_machine.system() != 'windows'
+    dep_link_args += ['-Wl,-s']
+  endif
+endif
+
 if host_machine.system() == 'darwin'
   py_soabi = py.get_variable('SOABI')
   if py_soabi.startswith('cp')
     resp_file = meson.project_source_root() / 'cmake/darwin-ld-cpython.sym'
   else
     resp_file = meson.project_source_root() / 'cmake/darwin-ld-pypy.sym'
   endif
-  dep_link_args += ['-Wl,-dead_strip', '-Wl,-x', '-Wl,-S', '-Wl,@' + resp_file]
-elif host_machine.system() != 'windows'
-  dep_link_args += ['-Wl,-s']
+  dep_link_args += ['-Wl,@' + resp_file]
 endif
 
 if get_option('default_library') == 'shared'
@@ -89,4 +96,7 @@ nanobind_dep = declare_dependency(
   dependencies: [py_dep, robin_map_dep],
   compile_args: dep_compile_args,
   link_args: dep_link_args,
+  variables: {
+    'stubgen': meson.current_source_dir() / 'src/stubgen.py',
+  },
 )