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From: Kerrick Staley <kstaley@janestreet.com>
Date: Mon, 22 May 2023 12:05:43 -0400
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 <CACfSeTE=r0BkTB8S_1BDw8=5tharqoZAaeRLUNkYPsSu8jbw+A@mail.gmail.com>
Subject: Does psycopg2-binary provide the psycopg2 package?
To: psycopg@postgresql.org
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If I install psycopg2-binary, and then I try to install a package that
depends on psycopg2, will pip "know" that psycopg2-binary satisfies the
psycopg2 requirement and avoid installing psycopg2?

Empirically the answer seems to be "no". I installed psycopg2-binary, then
ran `python3 -m pip install -e .` in a directory with this setup.py file
<https://gist.github.com/kerrick-js/b0962b74853cc297cf2186d251763262>, and
it tried to install psycopg2.

Is there a way that, in my setup.py file, I can depend on either psycopg2
or psycopg2-binary, whichever is available?

Thanks,
Kerrick

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<div dir=3D"ltr">If I install psycopg2-binary, and then I try to install a =
package that depends on psycopg2, will pip &quot;know&quot; that psycopg2-b=
inary satisfies=C2=A0the psycopg2 requirement and avoid installing psycopg2=
?<div><br></div><div>Empirically the answer seems to be &quot;no&quot;. I i=
nstalled psycopg2-binary, then ran `python3 -m pip install -e .` in a direc=
tory with=C2=A0<a href=3D"https://gist.github.com/kerrick-js/b0962b74853cc2=
97cf2186d251763262">this setup.py file</a>, and it tried to install psycopg=
2.</div><div><br></div><div>Is there a way that, in my setup.py file, I can=
 depend on=C2=A0either psycopg2 or psycopg2-binary, whichever is available?=
</div><div><br></div><div>Thanks,</div><div>Kerrick</div></div>

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