https://github.com/python/cpython/commit/b142878db1e54149feba62b08df1236432793bf0
commit: b142878db1e54149feba62b08df1236432793bf0
branch: main
author: Brett Cannon <[email protected]>
committer: zware <[email protected]>
date: 2026-05-07T17:20:35-05:00
summary:
Improve error messages when the WASI SDK can't be found (GH-149508)
files:
M Platforms/WASI/_build.py
diff --git a/Platforms/WASI/_build.py b/Platforms/WASI/_build.py
index 76d2853163baa9..c1a91a9c833b8e 100644
--- a/Platforms/WASI/_build.py
+++ b/Platforms/WASI/_build.py
@@ -222,10 +222,8 @@ def wasi_sdk(context):
if wasi_sdk_path := context.wasi_sdk_path:
if not wasi_sdk_path.exists():
raise ValueError(
- "WASI SDK not found; "
- "download from "
- "https://github.com/WebAssembly/wasi-sdk and/or "
- "specify via $WASI_SDK_PATH or --wasi-sdk"
+ "WASI SDK not found at "
+ f"{os.fsdecode(wasi_sdk_path)!r} (via --wasi-sdk)"
)
return wasi_sdk_path
@@ -237,7 +235,8 @@ def wasi_sdk(context):
wasi_sdk_path = pathlib.Path(wasi_sdk_path_env_var)
if not wasi_sdk_path.exists():
raise ValueError(
- f"WASI SDK not found at $WASI_SDK_PATH ({wasi_sdk_path})"
+ f"WASI SDK not found at {os.fsdecode(wasi_sdk_path)!r} "
+ "(via $WASI_SDK_PATH)"
)
else:
opt_path = pathlib.Path("/opt")
@@ -272,6 +271,14 @@ def wasi_sdk(context):
f" Found WASI SDK {major_version}, "
f"but WASI SDK {wasi_sdk_version} is the supported version",
)
+ elif not wasi_sdk_path:
+ raise ValueError(
+ f"WASI SDK {wasi_sdk_version} not found; "
+ "download from "
+ "https://github.com/WebAssembly/wasi-sdk and install in "
+ f"{os.fsdecode(opt_path)!r} or specify the SDK via "
+ "$WASI_SDK_PATH or --wasi-sdk"
+ )
# Cache the result.
context.wasi_sdk_path = wasi_sdk_path
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