Add full environment markers support #1142
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djetelina
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May 31, 2019
| simple-project = { path = "../simple_project/" } | ||
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| # Dependency with markers | ||
| functools32 = { version = "^3.2.3", markers = "python_version ~= '2.7' and sys_platform == 'win32' or python_version in '3.4 3.5'" } |
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Nitpick: This sample made me realize I have no idea how it would resolve. Is it (A and B) or (C), A and (B or C)? I had to go into the PEP and quickly scan it. Including the basics in poetry's documentation in clear examples might be useful.
Stolen from the PEP's tests:
# Should parse as (a and b) or c
"name; os_name=='a' and os_name=='b' or os_name=='c'",
# Overriding precedence -> a and (b or c)
"name; os_name=='a' and (os_name=='b' or os_name=='c')",
# should parse as a or (b and c)
"name; os_name=='a' or os_name=='b' and os_name=='c'",
# Overriding precedence -> (a or b) and c
"name; (os_name=='a' or os_name=='b') and os_name=='c'",And even with those, I'm still a bit unclear on how it works with extras. Perhaps it's not poetry's responsiblity to document this clearly, but it certainly wouldn't hurt.
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Pull Request Check List
Up until now, Poetry only supported the
pythonandplatformproperties to specify conditional dependencies. This PR adds support for any environment markers via themarkersproperty.