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Omit REQUESTS_CA_BUNDLE from build env defaults #6083

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Omit REQUESTS_CA_BUNDLE from build env defaults #6083

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01e5038
omit unset REQUESTS_CA_BUNDLE from build env
ryanskeith Aug 7, 2026
5a082be
Update 6063-requests-ca-bundle.md
ryanskeith Aug 7, 2026
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2 changes: 1 addition & 1 deletion conda_build/environ.py
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Original file line number Diff line number Diff line change
Expand Up @@ -413,7 +413,6 @@ def conda_build_vars(prefix, config):
"SRC_DIR": src_dir,
"HTTPS_PROXY": os.getenv("HTTPS_PROXY", ""),
"HTTP_PROXY": os.getenv("HTTP_PROXY", ""),
"REQUESTS_CA_BUNDLE": os.getenv("REQUESTS_CA_BUNDLE", ""),
"DIRTY": "1" if config.dirty else "",
"ROOT": context.root_prefix,
}
Expand Down Expand Up @@ -801,6 +800,7 @@ def os_vars(m, prefix):
get_default("LANG")
get_default("LC_ALL")
get_default("MAKEFLAGS")
get_default("REQUESTS_CA_BUNDLE")
d["SHLIB_EXT"] = get_shlib_ext(m.config.host_platform)
d["PATH"] = os.environ.copy()["PATH"]

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3 changes: 3 additions & 0 deletions docs/source/user-guide/environment-variables.rst
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Expand Up @@ -78,6 +78,9 @@ inherited from the shell environment in which you invoke
- Inherited from your shell environment.
* - HTTPS_PROXY
- Inherited from your shell environment.
* - REQUESTS_CA_BUNDLE
- Inherited from your shell environment when set.
Omitted when unset so TLS clients do not see an empty CA path.
* - LANG
- Inherited from your shell environment.
* - MAKEFLAGS
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19 changes: 19 additions & 0 deletions news/6063-requests-ca-bundle.md
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@@ -0,0 +1,19 @@
### Enhancements

* <news item>

### Bug fixes

* Only pass through ``REQUESTS_CA_BUNDLE`` when it is set in the environment, matching ``SSL_CERT_FILE``. Setting it to an empty string broke TLS clients such as botocore. (#6063 via #6083)

### Deprecations

* <news item>

### Docs

* Document ``REQUESTS_CA_BUNDLE`` as an inherited build environment variable. (#6063 via #6083)

### Other

* <news item>
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