Prepare for v2.0.0b1 release

- Update CHANGELOG.md
- Update to bundled capnproto-1.0.1
  * Compiles with capnproto-0.8.0 and higher
- *Breaking Change* Remove allow_cancellation (see
  https://capnproto.org/news/2023-07-28-capnproto-1.0.html)
  * This is tricky to handle for older versions of capnproto. Instead of
    dealing with lots of complication, removing it entirely.
- Fix some documentation after the build backend support was added
- Update tox.ini to support 3.8 to 3.12
- Update cibuildwheel to 2.16.1
  * Adds Python 3.12 supports and implicitly deprecates EOL 3.7 (though it's
    still built)

.github/workflows/wheels.yml

@@ -48,10 +48,10 @@ jobs:
       # Used to host cibuildwheel
       - uses: actions/setup-python@v4
         with:
-          python-version: '3.11'
+          python-version: '3.12'
 
       - name: Install cibuildwheel
-        run: python -m pip install cibuildwheel==2.12.0
+        run: python -m pip install cibuildwheel==2.16.1
 
       - name: Build wheels
         run: python -m cibuildwheel --output-dir wheelhouse

CHANGELOG.md

@@ -1,3 +1,17 @@
+## v2.0.0b1 (2023-10-03)
+- Update to bundled capnproto-1.0.1
+- Remove explicit support for Python 3.7 (though wheels are still built for now)
+- Use custom build backend to support build args (#328)
+- Update Cython version and Python to 3.12 (#320)
+- Wrap all capnp code in a context-manager to avoid segfaults (#317)
+- Schema loading from the wire (#307)
+- Make pycapnp more GIL friendly (#308)
+- Use cibuildwheel in ci (#309)
+- Integrate the KJ event loop into Python's asyncio event loop (#310)
+- Allow capability implementation methods to be `async` (#312)
+- Allow reading and writing messages from sockets in `async` mode (#313)
+- Remove the synchronous RPC mode (#315)
+
 ## v1.3.0 (2023-01-26)
 - Update to bundled capnproto-0.10.3
 - Add Python 3.11 to Github Actions builds (#306)

README.md

@@ -16,7 +16,7 @@
 * cmake (needed for bundled capnproto)
   - ninja (macOS + Linux)
   - Visual Studio 2017+
-* capnproto-0.10 (>=0.7.0 will also work if linking to system libraries)
+* capnproto-1.0 (>=0.8.0 will also work if linking to system libraries)
   - Not necessary if using bundled capnproto
 * Python development headers (i.e. Python.h)
   - Distributables from python.org include these, however they are usually in a separate package on Linux distributions

buildutils/bundle.py

@@ -26,7 +26,7 @@ pjoin = os.path.join
 #
 
 
-bundled_version = (0, 10, 3)
+bundled_version = (1, 0, 1)
 libcapnp_name = "capnproto-c++-%i.%i.%i.tar.gz" % (bundled_version)
 libcapnp_url = "https://capnproto.org/" + libcapnp_name
 
@@ -50,8 +50,13 @@ def localpath(*args):
     return os.path.abspath(pjoin(*plist))
 
 
-def fetch_archive(savedir, url, fname, force=False):
+def fetch_archive(savedir, url, force=False):
     """download an archive to a specific location"""
+    req = urlopen(url)
+    # Lookup filename
+    fname = req.info().get_filename()
+    if not fname:
+        fname = os.path.basename(url)
     dest = pjoin(savedir, fname)
     if os.path.exists(dest) and not force:
         print("already have %s" % fname)
@@ -59,7 +64,6 @@ def fetch_archive(savedir, url, fname, force=False):
     print("fetching %s into %s" % (url, savedir))
     if not os.path.exists(savedir):
         os.makedirs(savedir)
-    req = urlopen(url)
     with open(dest, "wb") as f:
         f.write(req.read())
     return dest
@@ -80,7 +84,7 @@ def fetch_libcapnp(savedir, url=None):
     if os.path.exists(dest):
         print("already have %s" % dest)
         return
-    fname = fetch_archive(savedir, url, libcapnp_name)
+    fname = fetch_archive(savedir, url)
     tf = tarfile.open(fname)
     with_version = pjoin(savedir, tf.firstmember.path)
     tf.extractall(savedir)

capnp/includes/capnp_cpp.pxd

@@ -476,7 +476,6 @@ cdef extern from "capnp/capability.h" namespace " ::capnp":
         # void adoptResults(Orphan<Results>&& value);
         # Orphanage getResultsOrphanage(uint firstSegmentWordSize = 0);
         VoidPromise tailCall(Request & tailRequest)
-        void allowCancellation() except +reraise_kj_exception
 
 cdef extern from "kj/async.h" namespace " ::kj":
     cdef cppclass EventPort:

capnp/lib/capnp.pyx

@@ -1912,9 +1912,6 @@ cdef class _CallContext:
     cpdef release_params(self):
         self.thisptr.releaseParams()
 
-    cpdef allow_cancellation(self):
-        self.thisptr.allowCancellation()
-
     cpdef tail_call(self, _Request tailRequest):
         return _voidpromise_to_asyncio(self.thisptr.tailCall(move(deref(tailRequest.thisptr_child))))
 

docs/install.rst

@@ -13,7 +13,7 @@ To force rebuilding the pip package from source (you'll need requirments.txt or
 
     pip install --no-binary :all: pycapnp
 
-To force bundling libcapnp (or force system libcapnp), just in case setup.py isn't doing the right thing::
+To force bundling libcapnp (or force system libcapnp), just in case pip isn't doing the right thing::
 
     pip install --no-binary :all: -C force-bundled-libcapnp=True
     pip install --no-binary :all: -C force-system-libcapnp=True
@@ -50,11 +50,6 @@ And install pycapnp with::
     cd pycapnp
     pip install .
 
-or::
-
-    cd pycapnp
-    python setup.py install
-
 
 Development
 -----------
@@ -72,21 +67,15 @@ Building::
     cd pycapnp
     pip install .
 
-or::
-
-    cd pycapnp
-    python setup.py install
-
 Useful targets for setup.py::
 
-    python setup.py build
     python setup.py clean
 
-Useful command-line arguments are available for setup.py::
+Useful command-line arguments are available for pip install::
 
-    --force-bundled-libcapnp
+    -C force-bundled-libcapnp=True
-    --force-system-libcapnp
+    -C force-system-libcapnp=True
-    --libcapnp-url
+    -C libcapnp-url="https://github.com/capnproto/capnproto/archive/master.tar.gz"
 
 Testing is done through pytest::
 

setup.py

@@ -22,10 +22,10 @@ from buildutils.build import build_libcapnp
 from buildutils.bundle import fetch_libcapnp
 
 
-MAJOR = 1
+MAJOR = 2
-MINOR = 3
+MINOR = 0
 MICRO = 0
-TAG = ""
+TAG = "b1"
 VERSION = "%d.%d.%d%s" % (MAJOR, MINOR, MICRO, TAG)
 
 
@@ -170,15 +170,16 @@ class build_libcapnp_ext(build_ext_c):
             else:
                 print("capnproto already built at {}".format(build_dir))
 
-            self.include_dirs += [os.path.join(build_dir, "include")]
+            self.include_dirs = [os.path.join(build_dir, "include")] + self.include_dirs
-            self.library_dirs += [
+            self.library_dirs = [
-                os.path.join(build_dir, "lib{}".format(8 * struct.calcsize("P")))
+                os.path.join(build_dir, "lib{}".format(8 * struct.calcsize("P"))),
-            ]
+                os.path.join(build_dir, "lib"),
-            self.library_dirs += [os.path.join(build_dir, "lib")]
+            ] + self.library_dirs
 
             # Copy .capnp files from source
             src_glob = glob.glob(os.path.join(build_dir, "include", "capnp", "*.capnp"))
             dst_dir = os.path.join(self.build_lib, "capnp")
+            os.makedirs(dst_dir, exist_ok=True)
             for file in src_glob:
                 print("copying {} -> {}".format(file, dst_dir))
                 shutil.copy(file, dst_dir)
@@ -253,10 +254,11 @@ setup(
         "Operating System :: POSIX",
         "Programming Language :: C++",
         "Programming Language :: Cython",
-        "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
+        "Programming Language :: Python :: 3.11",
+        "Programming Language :: Python :: 3.12",
         "Programming Language :: Python :: Implementation :: PyPy",
         "Topic :: Communications",
     ],

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py37,py38,py39,py310,py311
+envlist = py38,py39,py310,py311,py12
 skipsdist = True
 
 [testenv]