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Nix Hackers

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For people hacking on the Nix package manager itself196 Servers

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13 Mar 2025
@puck:puck.moepuck
In reply to @puck:puck.moe
they are values derived from either the current drv's output, or any input drv + its output. its representation is / then the nixbase32 repr of the full sha256 of either "nix-output: " or "nix-upstream-output: :<the name the output would have; so either drv's name or append a dash and the output name>"
uh, one colon. element's not letting me edit this message :v
16:42:22
@jade_:matrix.orgjade_ NIX_REMOTE 20:41:29
@jade_:matrix.orgjade_its really badly documented but it is actually equivalent to --store internally; see my hastily scrawled notes on all env-vars used by cppnix derivatives https://docs.lix.systems/manual/lix/stable/contributing/testing.html?highlight=NIX_REMOTE#used-by-lix20:42:58
@Ericson2314:matrix.orgJohn EricsonYou can also use just use NIX_CONFIG, the one env var to rule them all20:48:09
@jade_:matrix.orgjade_mhm20:49:55
@jade_:matrix.orgjade_it seems like sometimes env-vars get introduced like NIX_ABORT_ON_WARN which should just be more NIX_CONFIG20:51:35
@Ericson2314:matrix.orgJohn EricsonIf they correspond to an option, yes20:55:44
@Ericson2314:matrix.orgJohn EricsonBtw, you should see what we just did to derivation goal20:55:58
@Ericson2314:matrix.orgJohn EricsonEven if you're gonna rewrite it in Rust anyways 20:56:06
14 Mar 2025
@jade_:matrix.orgjade_ yeah, NIX_ABORT_ON_WARN does, i am not sure why it was added; we caught this in code review of builtins.warn 00:04:27

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