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doc: avoid 'simply' (#266434)
While the word 'simply' is usually added to encourage readers, it often has the opposite effect and may even appear condescending, especially when the reader runs into trouble trying to apply the suggestions from the documentation. It is almost always an improvement to simply drop the word from the sentence. (there are more possible improvements like this, we can apply those in separate PRs)
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@ -6,6 +6,6 @@ You can also specify a `runtimeDependencies` variable which lists dependencies t
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In certain situations you may want to run the main command (`autoPatchelf`) of the setup hook on a file or a set of directories instead of unconditionally patching all outputs. This can be done by setting the `dontAutoPatchelf` environment variable to a non-empty value.
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By default `autoPatchelf` will fail as soon as any ELF file requires a dependency which cannot be resolved via the given build inputs. In some situations you might prefer to just leave missing dependencies unpatched and continue to patch the rest. This can be achieved by setting the `autoPatchelfIgnoreMissingDeps` environment variable to a non-empty value. `autoPatchelfIgnoreMissingDeps` can be set to a list like `autoPatchelfIgnoreMissingDeps = [ "libcuda.so.1" "libcudart.so.1" ];` or to simply `[ "*" ]` to ignore all missing dependencies.
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By default `autoPatchelf` will fail as soon as any ELF file requires a dependency which cannot be resolved via the given build inputs. In some situations you might prefer to just leave missing dependencies unpatched and continue to patch the rest. This can be achieved by setting the `autoPatchelfIgnoreMissingDeps` environment variable to a non-empty value. `autoPatchelfIgnoreMissingDeps` can be set to a list like `autoPatchelfIgnoreMissingDeps = [ "libcuda.so.1" "libcudart.so.1" ];` or to `[ "*" ]` to ignore all missing dependencies.
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The `autoPatchelf` command also recognizes a `--no-recurse` command line flag, which prevents it from recursing into subdirectories.
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@ -146,7 +146,7 @@ agdaPackages.mkDerivation {
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### Building Agda packages {#building-agda-packages}
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The default build phase for `agdaPackages.mkDerivation` simply runs `agda` on the `Everything.agda` file.
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The default build phase for `agdaPackages.mkDerivation` runs `agda` on the `Everything.agda` file.
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If something else is needed to build the package (e.g. `make`) then the `buildPhase` should be overridden.
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Additionally, a `preBuild` or `configurePhase` can be used if there are steps that need to be done prior to checking the `Everything.agda` file.
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`agda` and the Agda libraries contained in `buildInputs` are made available during the build phase.
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@ -250,7 +250,7 @@ Usually, the maintainers will answer within a week or two with a new release.
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Bumping the version of that reverse dependency should be a further commit on your PR.
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In the rare case that a new release is not to be expected within an acceptable time,
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simply mark the broken package as broken by setting `meta.broken = true;`.
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mark the broken package as broken by setting `meta.broken = true;`.
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This will exclude it from the build test.
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It can be added later when it is fixed,
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and does not hinder the advancement of the whole package set in the meantime.
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@ -44,7 +44,7 @@ There is also a `buildMix` helper, whose behavior is closer to that of `buildErl
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## How to Install BEAM Packages {#how-to-install-beam-packages}
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BEAM builders are not registered at the top level, simply because they are not relevant to the vast majority of Nix users.
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BEAM builders are not registered at the top level, because they are not relevant to the vast majority of Nix users.
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To use any of those builders into your environment, refer to them by their attribute path under `beamPackages`, e.g. `beamPackages.rebar3`:
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::: {.example #ex-beam-ephemeral-shell}
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@ -8,7 +8,7 @@ It fetches its Dart dependencies automatically through `fetchDartDeps`, and (thr
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If you are packaging a Flutter desktop application, use [`buildFlutterApplication`](#ssec-dart-flutter) instead.
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`vendorHash`: is the hash of the output of the dependency fetcher derivation. To obtain it, simply set it to `lib.fakeHash` (or omit it) and run the build ([more details here](#sec-source-hashes)).
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`vendorHash`: is the hash of the output of the dependency fetcher derivation. To obtain it, set it to `lib.fakeHash` (or omit it) and run the build ([more details here](#sec-source-hashes)).
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If the upstream source is missing a `pubspec.lock` file, you'll have to vendor one and specify it using `pubspecLockFile`. If it is needed, one will be generated for you and printed when attempting to build the derivation.
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@ -177,7 +177,7 @@ exactly one version. Those versions need to satisfy all the version constraints
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given in the `.cabal` file of your package and all its dependencies.
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The [Haskell builder in nixpkgs](#haskell-mkderivation) does no such thing.
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It will simply take as input packages with names off the desired dependencies
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It will take as input packages with names off the desired dependencies
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and just check whether they fulfill the version bounds and fail if they don’t
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(by default, see `jailbreak` to circumvent this).
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@ -780,7 +780,7 @@ there instead.
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The top level `pkgs.haskell-language-server` attribute is just a convenience
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wrapper to make it possible to install HLS for multiple GHC versions at the
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same time. If you know, that you only use one GHC version, e.g., in a project
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specific `nix-shell` you can simply use
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specific `nix-shell` you can use
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`pkgs.haskellPackages.haskell-language-server` or
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`pkgs.haskell.packages.*.haskell-language-server` from the package set you use.
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@ -268,7 +268,7 @@ getting an environment variable for `ext:getenv`. This will load the
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### Loading systems {#lisp-loading-systems}
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There, you can simply use `asdf:load-system`. This works by setting the right
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There, you can use `asdf:load-system`. This works by setting the right
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values for the `CL_SOURCE_REGISTRY`/`ASDF_OUTPUT_TRANSLATIONS` environment
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variables, so that systems are found in the Nix store and pre-compiled FASLs are
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loaded.
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@ -53,7 +53,7 @@ After setting `maven.buildMavenPackage`, we then do standard Java `.jar` install
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Maven defines default versions for its core plugins, e.g. `maven-compiler-plugin`. If your project does not override these versions, an upgrade of Maven will change the version of the used plugins, and therefore the derivation and hash.
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When `maven` is upgraded, `mvnHash` for the derivation must be updated as well: otherwise, the project will simply be built on the derivation of old plugins, and fail because the requested plugins are missing.
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When `maven` is upgraded, `mvnHash` for the derivation must be updated as well: otherwise, the project will be built on the derivation of old plugins, and fail because the requested plugins are missing.
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This clearly prevents automatic upgrades of Maven: a manual effort must be made throughout nixpkgs by any maintainer wishing to push the upgrades.
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@ -58,7 +58,7 @@ php.withExtensions ({ enabled, all }:
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++ [ all.imagick ])
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```
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To build your list of extensions from the ground up, you can simply
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To build your list of extensions from the ground up, you can
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ignore `enabled`:
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```nix
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@ -140,7 +140,7 @@ Example of building `composer` with additional extensions:
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### Overriding PHP packages {#ssec-php-user-guide-overriding-packages}
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`php-packages.nix` form a scope, allowing us to override the packages defined
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within. For example, to apply a patch to a `mysqlnd` extension, you can simply
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within. For example, to apply a patch to a `mysqlnd` extension, you can
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pass an overlay-style function to `php`’s `packageOverrides` argument:
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```nix
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@ -191,7 +191,7 @@ using the `bin` attribute in `composer.json`, these binaries will be
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automatically linked and made accessible in the derivation. In this context,
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"binaries" refer to PHP scripts that are intended to be executable.
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To use the helper effectively, simply add the `vendorHash` attribute, which
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To use the helper effectively, add the `vendorHash` attribute, which
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enables the wrapper to handle the heavy lifting.
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Internally, the helper operates in three stages:
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@ -264,7 +264,7 @@ python3MyBlas = pkgs.python3.override {
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```
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This is particularly useful for numpy and scipy users who want to gain speed with other blas implementations.
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Note that using simply `scipy = super.scipy.override { blas = super.pkgs.mkl; };` will likely result in
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Note that using `scipy = super.scipy.override { blas = super.pkgs.mkl; };` will likely result in
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compilation issues, because scipy dependencies need to use the same blas implementation as well.
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#### `buildPythonApplication` function {#buildpythonapplication-function}
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@ -433,7 +433,7 @@ python3.withPackages (ps: [ ps.pyramid ])
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Now, `ps` is set to `python3Packages`, matching the version of the interpreter.
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As [`python.withPackages`](#python.withpackages-function) simply uses [`python.buildEnv`](#python.buildenv-function) under the hood, it also
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As [`python.withPackages`](#python.withpackages-function) uses [`python.buildEnv`](#python.buildenv-function) under the hood, it also
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supports the `env` attribute. The `shell.nix` file from the previous section can
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thus be also written like this:
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@ -682,7 +682,7 @@ b = np.array([3,4])
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print(f"The dot product of {a} and {b} is: {np.dot(a, b)}")
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```
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Then we simply execute it, without requiring any environment setup at all!
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Then we execute it, without requiring any environment setup at all!
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```sh
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$ ./foo.py
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@ -1713,7 +1713,7 @@ This is an example of a `default.nix` for a `nix-shell`, which allows to consume
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a virtual environment created by `venv`, and install Python modules through
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`pip` the traditional way.
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Create this `default.nix` file, together with a `requirements.txt` and simply
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Create this `default.nix` file, together with a `requirements.txt` and
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execute `nix-shell`.
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```nix
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@ -94,7 +94,7 @@ $ bundle lock
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$ bundix
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```
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If you already have a `Gemfile.lock`, you can simply run `bundix` and it will work the same.
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If you already have a `Gemfile.lock`, you can run `bundix` and it will work the same.
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To update the gems in your `Gemfile.lock`, you may use the `bundix -l` flag, which will create a new `Gemfile.lock` in case the `Gemfile` has a more recent time of modification.
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@ -251,7 +251,7 @@ source 'https://rubygems.org' do
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end
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```
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If you want to package a specific version, you can use the standard Gemfile syntax for that, e.g. `gem 'mdl', '0.5.0'`, but if you want the latest stable version anyway, it's easier to update by simply running the `bundle lock` and `bundix` steps again.
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If you want to package a specific version, you can use the standard Gemfile syntax for that, e.g. `gem 'mdl', '0.5.0'`, but if you want the latest stable version anyway, it's easier to update by running the `bundle lock` and `bundix` steps again.
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Now you can also make a `default.nix` that looks like this:
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@ -32,7 +32,7 @@ look for the following directories:
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(If not targeting macOS, replace `macosx` with the Xcode platform name.)
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- On other platforms: `lib/swift/linux/x86_64`
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(Where `linux` and `x86_64` are from lowercase `uname -sm`.)
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- For convenience, Nixpkgs also adds simply `lib/swift` to the search path.
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- For convenience, Nixpkgs also adds `lib/swift` to the search path.
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This can save a bit of work packaging Swift modules, because many Nix builds
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will produce output for just one target any way.
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@ -123,7 +123,7 @@ swiftpmFlags = [ "--disable-dead-strip" ];
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The default `buildPhase` already passes `-j` for parallel building.
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If these two customization options are insufficient, simply provide your own
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If these two customization options are insufficient, provide your own
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`buildPhase` that invokes `swift build`.
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### Running tests {#ssec-swiftpm-running-tests}
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@ -34,7 +34,7 @@ $ nix repl
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map (p: p.name) pkgs.rxvt-unicode.plugins
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```
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Alternatively, if your shell is bash or zsh and have completion enabled, simply type `nixpkgs.rxvt-unicode.plugins.<tab>`.
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Alternatively, if your shell is bash or zsh and have completion enabled, type `nixpkgs.rxvt-unicode.plugins.<tab>`.
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In addition to `plugins` the options `extraDeps` and `perlDeps` can be used to install extra packages. `extraDeps` can be used, for example, to provide `xsel` (a clipboard manager) to the clipboard plugin, without installing it globally:
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@ -319,7 +319,7 @@ let f(h, h + 1, i) = i + (if i <= 0 then h else h)
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let f(h, h + 1, i) = i + h
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```
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This is where “sum-like” comes in from above: We can just sum all of the host offsets to get the host offset of the transitive dependency. The target offset is the transitive dependency is simply the host offset + 1, just as it was with the dependencies composed to make this transitive one; it can be ignored as it doesn’t add any new information.
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This is where “sum-like” comes in from above: We can just sum all of the host offsets to get the host offset of the transitive dependency. The target offset is the transitive dependency is the host offset + 1, just as it was with the dependencies composed to make this transitive one; it can be ignored as it doesn’t add any new information.
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Because of the bounds checks, the uncommon cases are `h = t` and `h + 2 = t`. In the former case, the motivation for `mapOffset` is that since its host and target platforms are the same, no transitive dependency of it should be able to “discover” an offset greater than its reduced target offsets. `mapOffset` effectively “squashes” all its transitive dependencies’ offsets so that none will ever be greater than the target offset of the original `h = t` package. In the other case, `h + 1` is skipped over between the host and target offsets. Instead of squashing the offsets, we need to “rip” them apart so no transitive dependencies’ offset is that one.
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@ -649,7 +649,7 @@ Zip files are unpacked using `unzip`. However, `unzip` is not in the standard en
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#### Directories in the Nix store {#directories-in-the-nix-store}
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These are simply copied to the current directory. The hash part of the file name is stripped, e.g. `/nix/store/1wydxgby13cz...-my-sources` would be copied to `my-sources`.
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These are copied to the current directory. The hash part of the file name is stripped, e.g. `/nix/store/1wydxgby13cz...-my-sources` would be copied to `my-sources`.
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Additional file types can be supported by setting the `unpackCmd` variable (see below).
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@ -788,7 +788,7 @@ Hook executed at the end of the configure phase.
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### The build phase {#build-phase}
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The build phase is responsible for actually building the package (e.g. compiling it). The default `buildPhase` simply calls `make` if a file named `Makefile`, `makefile` or `GNUmakefile` exists in the current directory (or the `makefile` is explicitly set); otherwise it does nothing.
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The build phase is responsible for actually building the package (e.g. compiling it). The default `buildPhase` calls `make` if a file named `Makefile`, `makefile` or `GNUmakefile` exists in the current directory (or the `makefile` is explicitly set); otherwise it does nothing.
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#### Variables controlling the build phase {#variables-controlling-the-build-phase}
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@ -1317,7 +1317,7 @@ Nix itself considers a build-time dependency as merely something that should pre
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In order to alleviate this burden, the setup hook mechanism was written, where any package can include a shell script that \[by convention rather than enforcement by Nix\], any downstream reverse-dependency will source as part of its build process. That allows the downstream dependency to merely specify its dependencies, and lets those dependencies effectively initialize themselves. No boilerplate mirroring the list of dependencies is needed.
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The setup hook mechanism is a bit of a sledgehammer though: a powerful feature with a broad and indiscriminate area of effect. The combination of its power and implicit use may be expedient, but isn’t without costs. Nix itself is unchanged, but the spirit of added dependencies being effect-free is violated even if the latter isn’t. For example, if a derivation path is mentioned more than once, Nix itself doesn’t care and simply makes sure the dependency derivation is already built just the same—depending is just needing something to exist, and needing is idempotent. However, a dependency specified twice will have its setup hook run twice, and that could easily change the build environment (though a well-written setup hook will therefore strive to be idempotent so this is in fact not observable). More broadly, setup hooks are anti-modular in that multiple dependencies, whether the same or different, should not interfere and yet their setup hooks may well do so.
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The setup hook mechanism is a bit of a sledgehammer though: a powerful feature with a broad and indiscriminate area of effect. The combination of its power and implicit use may be expedient, but isn’t without costs. Nix itself is unchanged, but the spirit of added dependencies being effect-free is violated even if the latter isn’t. For example, if a derivation path is mentioned more than once, Nix itself doesn’t care and makes sure the dependency derivation is already built just the same—depending is just needing something to exist, and needing is idempotent. However, a dependency specified twice will have its setup hook run twice, and that could easily change the build environment (though a well-written setup hook will therefore strive to be idempotent so this is in fact not observable). More broadly, setup hooks are anti-modular in that multiple dependencies, whether the same or different, should not interfere and yet their setup hooks may well do so.
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The most typical use of the setup hook is actually to add other hooks which are then run (i.e. after all the setup hooks) on each dependency. For example, the C compiler wrapper’s setup hook feeds itself flags for each dependency that contains relevant libraries and headers. This is done by defining a bash function, and appending its name to one of `envBuildBuildHooks`, `envBuildHostHooks`, `envBuildTargetHooks`, `envHostHostHooks`, `envHostTargetHooks`, or `envTargetTargetHooks`. These 6 bash variables correspond to the 6 sorts of dependencies by platform (there’s 12 total but we ignore the propagated/non-propagated axis).
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@ -156,7 +156,7 @@ All programs that are built with [MPI](https://en.wikipedia.org/wiki/Message_Pas
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- [MVAPICH](https://mvapich.cse.ohio-state.edu/), attribute name `mvapich`
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To provide MPI enabled applications that use `MPICH`, instead of the default `Open MPI`, simply use the following overlay:
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To provide MPI enabled applications that use `MPICH`, instead of the default `Open MPI`, use the following overlay:
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```nix
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self: super:
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@ -37,7 +37,7 @@ Note: the `nixos` prefix tells us that we want to get the package from
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the `nixos` channel and works only in CLI tools. In declarative
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configuration use `pkgs` prefix (variable).
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To "uninstall" a package, simply remove it from
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To "uninstall" a package, remove it from
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[](#opt-environment.systemPackages) and run `nixos-rebuild switch`.
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```{=include=} sections
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@ -36,8 +36,8 @@ Here, we include two modules from the same directory, `vpn.nix` and
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Note that both `configuration.nix` and `kde.nix` define the option
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[](#opt-environment.systemPackages). When multiple modules define an
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option, NixOS will try to *merge* the definitions. In the case of
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[](#opt-environment.systemPackages), that's easy: the lists of
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packages can simply be concatenated. The value in `configuration.nix` is
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[](#opt-environment.systemPackages) the lists of packages will be
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concatenated. The value in `configuration.nix` is
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merged last, so for list-type options, it will appear at the end of the
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merged list. If you want it to appear first, you can use `mkBefore`:
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@ -28,7 +28,7 @@ manually (system wide), put them into your
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Thunar (the Xfce file manager) is automatically enabled when Xfce is
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enabled. To enable Thunar without enabling Xfce, use the configuration
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option [](#opt-programs.thunar.enable) instead of simply adding
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option [](#opt-programs.thunar.enable) instead of adding
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`pkgs.xfce.thunar` to [](#opt-environment.systemPackages).
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If you'd like to add extra plugins to Thunar, add them to
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@ -50,7 +50,7 @@ pandoc -f markdown_github -t docbook5 docs.md -o my-section.md
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Pandoc can also quickly convert a single `section.xml` to HTML, which is
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helpful when drafting.
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Sometimes writing valid DocBook is simply too difficult. In this case,
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Sometimes writing valid DocBook is too difficult. In this case,
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submit your documentation updates in a [GitHub
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Issue](https://github.com/NixOS/nixpkgs/issues/new) and someone will
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handle the conversion to XML for you.
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@ -4,7 +4,7 @@ Advanced users may wish to install NixOS using an existing PXE or iPXE
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setup.
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These instructions assume that you have an existing PXE or iPXE
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infrastructure and simply want to add the NixOS installer as another
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infrastructure and want to add the NixOS installer as another
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option. To build the necessary files from your current version of nixpkgs,
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you can run:
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@ -46,7 +46,7 @@ When upgrading from a previous release, please be aware of the following incompa
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Other notable improvements:
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- Revamped grsecurity/PaX support. There is now only a single general-purpose distribution kernel and the configuration interface has been streamlined. Desktop users should be able to simply set
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- Revamped grsecurity/PaX support. There is now only a single general-purpose distribution kernel and the configuration interface has been streamlined. Desktop users should be able to set
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```nix
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{
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@ -198,7 +198,7 @@ When upgrading from a previous release, please be aware of the following incompa
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For nginx, the dependencies are still automatically managed when `services.nginx.virtualhosts.<name>.enableACME` is enabled just like before. What changed is that nginx now directly depends on the specific certificates that it needs, instead of depending on the catch-all `acme-certificates.target`. This target unit was also removed from the codebase. This will mean nginx will no longer depend on certificates it isn't explicitly managing and fixes a bug with certificate renewal ordering racing with nginx restarting which could lead to nginx getting in a broken state as described at [NixOS/nixpkgs\#60180](https://github.com/NixOS/nixpkgs/issues/60180).
|
||||
|
||||
- The old deprecated `emacs` package sets have been dropped. What used to be called `emacsPackagesNg` is now simply called `emacsPackages`.
|
||||
- The old deprecated `emacs` package sets have been dropped. What used to be called `emacsPackagesNg` is now called `emacsPackages`.
|
||||
|
||||
- `services.xserver.desktopManager.xterm` is now disabled by default if `stateVersion` is 19.09 or higher. Previously the xterm desktopManager was enabled when xserver was enabled, but it isn't useful for all people so it didn't make sense to have any desktopManager enabled default.
|
||||
|
||||
|
@ -482,7 +482,7 @@ When upgrading from a previous release, please be aware of the following incompa
|
||||
|
||||
- If you use `postgresql` on a different server, you don't need to change anything as well since this module was never designed to configure remote databases.
|
||||
|
||||
- If you use `postgresql` and configured your synapse initially on `19.09` or older, you simply need to enable postgresql-support explicitly:
|
||||
- If you use `postgresql` and configured your synapse initially on `19.09` or older, you need to enable postgresql-support explicitly:
|
||||
|
||||
```nix
|
||||
{ ... }: {
|
||||
|
@ -422,7 +422,7 @@ When upgrading from a previous release, please be aware of the following incompa
|
||||
|
||||
- The `systemd-networkd` option `systemd.network.networks._name_.dhcpConfig` has been renamed to [systemd.network.networks._name_.dhcpV4Config](options.html#opt-systemd.network.networks._name_.dhcpV4Config) following upstream systemd's documentation change. See systemd.network 5 for details.
|
||||
|
||||
- In the `picom` module, several options that accepted floating point numbers encoded as strings (for example [services.picom.activeOpacity](options.html#opt-services.picom.activeOpacity)) have been changed to the (relatively) new native `float` type. To migrate your configuration simply remove the quotes around the numbers.
|
||||
- In the `picom` module, several options that accepted floating point numbers encoded as strings (for example [services.picom.activeOpacity](options.html#opt-services.picom.activeOpacity)) have been changed to the (relatively) new native `float` type. To migrate your configuration remove the quotes around the numbers.
|
||||
|
||||
- When using `buildBazelPackage` from Nixpkgs, `flat` hash mode is now used for dependencies instead of `recursive`. This is to better allow using hashed mirrors where needed. As a result, these hashes will have changed.
|
||||
|
||||
|
@ -14,7 +14,7 @@ In addition to numerous new and upgraded packages, this release includes the fol
|
||||
- Support for algorithms that `libxcrypt` [does not consider strong](https://github.com/besser82/libxcrypt/blob/v4.4.28/lib/hashes.conf#L41) are **deprecated** as of this release, and will be removed in NixOS 23.05.
|
||||
- This includes system login passwords. Given this, we **strongly encourage** all users to update their system passwords, as you will be unable to login if password hashes are not migrated by the time their support is removed.
|
||||
- When using `users.users.<name>.hashedPassword` to configure user passwords, run `mkpasswd`, and use the yescrypt hash that is provided as the new value.
|
||||
- On the other hand, for interactively configured user passwords, simply re-set the passwords for all users with `passwd`.
|
||||
- On the other hand, for interactively configured user passwords, re-set the passwords for all users with `passwd`.
|
||||
- This release introduces warnings for the use of deprecated hash algorithms for both methods of configuring passwords. To make sure you migrated correctly, run `nixos-rebuild switch`.
|
||||
|
||||
- The NixOS documentation is now generated from markdown. While docbook is still part of the documentation build process, it's a big step towards the full migration.
|
||||
|
@ -611,7 +611,7 @@ If you are:
|
||||
- adding new rules with `*.rules`
|
||||
- running custom PulseAudio commands with `pulse.cmd`
|
||||
|
||||
Simply move the definitions into the drop-in.
|
||||
Move the definitions into the drop-in.
|
||||
|
||||
Note that the use of `context.exec` is not recommended and other methods of running your thing are likely a better option.
|
||||
|
||||
|
@ -304,7 +304,7 @@
|
||||
|
||||
- Emacs macport version 29 was introduced.
|
||||
|
||||
- The option `services.networking.networkmanager.enableFccUnlock` was removed in favor of `networking.networkmanager.fccUnlockScripts`, which allows specifying unlock scripts explicitly. The previous option simply did enable all unlock scripts bundled with ModemManager, which is risky, and didn't allow using vendor-provided unlock scripts at all.
|
||||
- The option `services.networking.networkmanager.enableFccUnlock` was removed in favor of `networking.networkmanager.fccUnlockScripts`, which allows specifying unlock scripts explicitly. The previous option enabled all unlock scripts bundled with ModemManager, which is risky, and didn't allow using vendor-provided unlock scripts at all.
|
||||
|
||||
- The `html-proofer` package has been updated from major version 3 to major version 5, which includes [breaking changes](https://github.com/gjtorikian/html-proofer/blob/v5.0.8/UPGRADING.md).
|
||||
|
||||
|
Loading…
Reference in New Issue
Block a user