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test: Avoid interface_ipc.py Duplicate ID errors 

This change should fix issue https://github.com/bitcoin/bitcoin/issues/33417
reported by zaidmstrr. It's possible to reproduce the `mp/proxy.capnp:0:
failed: Duplicate ID @0xcc316e3f71a040fb` error by installing libmultiprocess
system-wide, or to one of the locations listed in the python test's `imports`
list before the local libmultiprocess subtree, and then running the test.

Github-Pull: #33420
Rebased-From: e9c52272eb
This commit is contained in:
Ryan Ofsky 2025-09-17 12:34:07 -04:00 committed by fanquake
parent 52bcf62c0b
commit 4b02bc1a72
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1 changed files with 6 additions and 1 deletions
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7
test/functional/interface_ipc.py
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@ -35,7 +35,12 @@ class IPCInterfaceTest(BitcoinTestFramework):
capnp_dir = Path(capnp.__path__[0]).parent
src_dir = Path(self.config['environment']['SRCDIR']) / "src"
mp_dir = src_dir / "ipc" / "libmultiprocess" / "include"
imports = [str(capnp_dir), str(src_dir), str(mp_dir)]
# List of import directories. Note: it is important for mp_dir to be
# listed first, in case there are other libmultiprocess installations on
# the system, to ensure that `import "/mp/proxy.capnp"` lines load the
# same file as capnp.load() loads directly below, and there are not
# "failed: Duplicate ID @0xcc316e3f71a040fb" errors.
imports = [str(mp_dir), str(capnp_dir), str(src_dir)]
return {
"proxy": capnp.load(str(mp_dir / "mp" / "proxy.capnp"), imports=imports),
"init": capnp.load(str(src_dir / "ipc" / "capnp" / "init.capnp"), imports=imports),