[Nix-dev] Attribute selection with default

[Michael Raskin]

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Eelco Dolstra wrote:
>   config.python.db4Support or true

You could de-nerf tryEval and have
"lib.fallback config.python.db4Support true"

"config.python.db4Support or true"
looks like the first step in the journey of a thousand miles towards
Perl. Which seems to be a bad thing..
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