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This makes a value that is true if builtins does not contain the
currentSystem function, but false if it does.
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a-m-joseph/abort-on-failed-platform-detection-instead-of-silently-assuming-pc
platforms.nix: use {} on failed detection instead of silently assuming pc
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This patch causes the autodetection code in lib/systems/platforms.nix
to return {} if it cannot detect the platform and one of the
platform.nix-detection-provided attributes (linux-kernel, gcc, and
rustc) are accessed, rather than silently assuming the "pc" platform
as was previously done.
It is definitely safe to assume that code using these attributes is
prepared to deal with `gcc` and `rustc` not being defined, because
many of the working entries in this file don't define it.
Regarding `linux-kernel` the situation is less certain, but some code
(`lib/systems/default.nix` for example) is already designed to deal
with that attribute being missing. At worst it would result in an
"attribute not found" error.
While adding mips64el bootstrap support to nixpkgs, the silent
assumption that mips64el routers are actually Intel PCs caused
significant frustration. This commit removes that assumption in order
to save people who port nixpkgs to new platforms in the future from
this frustration.
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lib/strings: call toString within hasInfix
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Co-authored-by: Robert Hensing <roberth@users.noreply.github.com>
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lib: add callLocklessFlake
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This should fix the issue mentioned here:
https://github.com/NixOS/nixpkgs/pull/168175#issuecomment-1107830574
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hercules-ci/lib-modules-allow-disable-_modules.args-docs-internal
lib.modules: Allow making _module.args internal
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For other platforms like Intel and ARM, we can do
e.g. lib.platforms.aarch64 to get only the 64-bit ARM platorms, but
until now there were no equivalents for RISC-V.
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lib/strings: add toShellVars
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Co-authored-by: Silvan Mosberger <github@infinisil.com>
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A straightforward piece of plumbing to safely inject Nix variables into
shell scripts:
''
${lib.toShellVars { inherit foo bar; }}
cmd "$foo" --bar "$bar"
''
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Probably being the most prominent document demonstrating the problem,
configuration.nix(5) describes various types in plural, e.g.
- ` Type: list of strings`
- ` Type: list of systemd options`
However, there are other cases where appending "s" to the inner type
effectively changes the type, e.g.
- ```
Type: list of string matching the pattern
[a-zA-Z0-9@%:_.\-]+[.](service|socket|device|mount|automount|swap|target|path|timer|scope|slice)s
```
This should've read "list of string[s]..." but instead changes the
regular expression.
Simply drop the best-effort plural in favour of correctness and
simplicity rather than adding more grammar related logic/trying to fix
this.
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lib/meta: add getExe to get the main program of a drv
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hercules-ci/issue-168767-extendModules-module-dedup-collision
`lib.types.submoduleWith`: Avoid `_key` collisions after `extendModules` (issue #168767)
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lib/systems/inspect.nix: add isPower64
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* lib/strings: optimise hasInfix function
* lib/strings: optimise hasInfix further using regex
* rstudio: call hasInfix with a string
* lib/strings: remove let from hasInfix
Co-authored-by: pennae <82953136+pennae@users.noreply.github.com>
Co-authored-by: pennae <82953136+pennae@users.noreply.github.com>
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before: :p lib.systems failed with
error: getting status of '...examples': no such file or directory
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This commit creates flakes.nix, which is a library containing functions
which relate to interacting with flakes. It also moves related functions
from trivial.nix into it.
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This is essentially a copy of the function of the same name, from
flake-compat. callLocklessFlake is useful when trying to utilise a
flake.nix without a lock file, often for when you want to create a
subflake from within a parent flake.
Co-authored-by: Tom Bereknyei <tomberek@gmail.com>
Co-authored-by: Robert Hensing <roberth@users.noreply.github.com>
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Closes #168327
The issue reported there can be demonstrated with the following
expression:
→ nix-instantiate --eval -E "with import ./. {}; pkgs.lib.options.showDefs [ { file = \"foo\"; value = pkgs.rust.packages.stable.buildRustPackages; } ]"
error: attempt to call something which is not a function but a string
at /home/ma27/Projects/nixpkgs/lib/trivial.nix:442:35:
441| isFunction = f: builtins.isFunction f ||
442| (f ? __functor && isFunction (f.__functor f));
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443|
Basically, if a `__functor` is in an attribute-set at depth-limit,
`__functor` will be set to `"<unevaluated>"`. This however breaks
`lib.isFunction` which checks for a `__functor` by invoking `__functor`
with `f` itself.
The same issue - "magic" attributes being shadowed by `withRecursion` -
also applies to others such as
`__pretty`/`__functionArgs`/`__toString`.
Since these attributes have a low-risk of causing a stack overflow
(because these are flat attr-sets or even functions), ignoring them in
`withRecursion` seems like a valid solution.
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This allows other module system consumers to
disable these docs via option merging.
For instance arion uses asciidoc instead of
docbook so that would look awful.
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This commit adds an `isPower64` predicate to the two existing
predicates for this architecture (`isPower` and `isPowerPC`).
Note that `isPowerPC` matches only 32-bit machines, whereas `isPower`
matches both 64-bit and 32-bit machines. Prior to this commit there
was no single `isXXX` predicate for `powerpc64le`.
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Profpatsch/lib.generators-add-toINIWithGlobalSection
lib.generators: add toINIWithGlobalSection
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lib/modules: Document `_module.args`
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Always sanitize derivation name
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`^` and `$` are implicit in `match`.
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Documents the _module.args option, motivated by many usages in Flakes,
especially with the deprecation of extraArgs
(https://github.com/NixOS/nixpkgs/commit/78ada833615d241ed76463aa5a024b614150eb4d)
The documentation rendering for this option had to be handled a bit
specially, since it's not declared in nixos/modules like all the other
NixOS options.
Co-Authored-By: pennae <github@quasiparticle.net>
Co-Authored-By: Robert Hensing <robert@roberthensing.nl>
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This uses the levenshtein distance to look through all possible
arguments to find ones that are close to what was requested:
error: Function in /home/infinisil/src/nixpkgs/pkgs/tools/text/ripgrep/default.nix
called without required argument "fetchFromGithub",
did you mean "fetchFromGitHub" or "fetchFromGitLab"?
With https://github.com/NixOS/nix/pull/3468 (in current nixUnstable) the error
message becomes even better, adding line location info
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Adds some functions related to string similarity:
- lib.strings.commonPrefixLength
- lib.strings.commonSuffixLength
- lib.strings.levenshtein
- lib.strings.levenshteinAtMost
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lib/trivial: actually expose warnIfNot and throwIf
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lib/modules: Finally remove deprecated types.optionSet
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