On 04/13/2011 02:28 PM, Shea Levy wrote:
Hi all,
Some software (e.g. Adobe Air) requires that the person installing it
agree to certain terms prior to downloading the file. While in many
(though not all) cases it is possible to simply put the download URL
into a nix expression and have nix download the file automatically,
such circumvention of the terms-and-conditions agreement seems legally
shaky at best. As such, I would like to create a function that looks
for a file on the local filesystem and aborts with a message that the
user must download the file manually before building the derivation
(if such a function already exists, please let me know). My question
for the list is this: How should the function find the file? I can
think of three ways, but I'm not sure which is best: having the user
download the file to a hard-coded location, having the user set an env
var with the location of the file, or having the user nix-store --add
the file manually. Or is there a better solution than any of these?
Cheers,
Shea Levy
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I have been pointed to the requireFile function, which I believe does
what I want.
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