This allows for adding new, conditionally set, derivation attributes
to an existing derivation without changing any output paths in the
case where the condition is not met.
It is useful that all (or almost all) .nix files in nixpkgs at least
parse since it allows for checking syntax in the repository
programmatically without evaluating anything.
This doesn't change uniq. Why not?
- In NixOS it seems that uniq is only used with
simple types that are fully checked by t.check.
- It exists for much longer and is used more widely.
- I believe we should deprecate it, because unique was
already better.
- unique can be a proving ground.
Type: either ints.positive (enum ["auto"])
Before: positive integer, meaning >0 or value "auto" (singular enum)
After: positive integer, meaning >0, or value "auto" (singular enum)
Currently, the `lib/tests/modules.sh` test checks the output of
`nix-instantiate --eval` without `--json`, which outputs an unspecified
human-readable format.
This patch modifies `modules.sh` to use the `--json` output instead, to
be robust against future changes to `nix-instantiate` output.
This commit temporarily adds pkgs/test/release to the
lib/tests/release.nix test suite, because ofborg already knows about
that entry point.
We should move the list of test entry points out of ofborg and into
a central place in nixpkgs:
https://github.com/NixOS/nixpkgs/issues/272591
Once we do that we won't need to have this ugly kludge in an
inappropriate place.
A more efficient sort in some cases, and often convenient.
This exposes `lib.lists.sortOn` immediately on `lib`, because it is
a sibling of `sort`, which is already present there.
Omitting it would lead to more confusion, and worse outcomes.
There's no confusion about the types `sort` or `sortOn` operate on.
Haskell agrees about the type for `sortOn`, and it is in its `base`.
This type is necessary to have correct merging behavior for
`allowUnfreePredicate` and `allowInsecurePredicate`
Co-authored-by: Robert Hensing <roberth@users.noreply.github.com>
The aws-sdk-cpp tests are flaky.
Since pull requests to staging cause nix to be rebuilt, this means
that staging PRs end up getting false CI failures due to whatever is
flaky in the AWS SDK tests. Since none of our CI needs to (or
should be able to) contact AWS S3, let's just omit it all. Bonus:
the tests build way faster.
For transforming back between lists and attrsets, it makes sense to have
a quasi-inverse of `builtins.listToAttrs` available as a library
function.
Co-authored-by: Silvan Mosberger <github@infinisil.com>
Co-authored-by: Robert Hensing <roberth@users.noreply.github.com>
To maintain backwards compatibility, this can't be changed in the Nix language.
We can however ensure that the version Nixpkgs has the more intuitive behavior.
What it does: line and column level *declaration* position information:
$ nix repl .
nix-repl> :p nixosConfigurations.micro.options.environment.systemPackages.declarationPositions
[ { column = 7; file = "/nix/store/24aj3k7fgqv3ly7qkbf98qvphasrw9nb-source/nixos/modules/config/system-path.nix"; line = 63; } ]
Use cases:
- ctags over NixOS options, as will be presented at NixCon 2023 ;)
- improving the documentation pages to go to the exact line of the
declarations.
Related work:
- https://github.com/NixOS/nixpkgs/pull/65024
This one does it for all *definitions* rather than declarations, and
it was not followed through with due to performance worries.
- https://github.com/NixOS/nixpkgs/pull/208173
The basis for this change. This change is just a rebase of that one.
I split it out to add the capability before adding users of it, in
order to simplify review. However, the ctags script in there is a
sample user of this feature.
Benchmarks: conducted by evaluating my own reasonably complex NixOS
configuration with the command:
`hyperfine -S none -w 1 -- "nix eval .#nixosConfigurations.snowflake.config.system.build.toplevel.outPath"`
```
Benchmark 1: nix eval .#nixosConfigurations.snowflake.config.system.build.toplevel.outPath
Time (mean ± σ): 8.971 s ± 0.254 s [User: 5.872 s, System: 1.388 s]
Range (min … max): 8.574 s … 9.327 s 10 runs
Benchmark 1: nix eval .#nixosConfigurations.snowflake.config.system.build.toplevel.outPath
Time (mean ± σ): 8.766 s ± 0.160 s [User: 5.873 s, System: 1.346 s]
Range (min … max): 8.496 s … 9.033 s 10 runs
```
Summary of results: it seems to be in the noise, this does not cause any
visible regression in times.
