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* add Module instances for each package's build.zig and attach it to the
dependencies.zig module with the hash digest hex string as the name.
* fix incorrectly skipping the wrong packages for creating
dependencies.zig
* a couple more renaming of "package" to "module"
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Only problem is that it looks like `has_build_zig` is being false when
it should be true.
After that is fixed then main.zig needs to create the `@dependencies`
module from the generated source code.
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For path-relative dependencies, they always need to be added to the hash
table at the end. For remote dependencies, they never need to be added.
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Finish the work started in 4c4fb839972f66f55aa44fc0aca5f80b0608c731.
Now the compiler compiles again.
Wire up dependency tree fetching code in the CLI for `zig build`.
Everything is hooked up except for `createDependenciesModule` is not yet
implemented.
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see #14311
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* start renaming "package" to "module" (see #14307)
- build system gains `main_mod_path` and `main_pkg_path` is still
there but it is deprecated.
* eliminate the object-oriented memory management style of what was
previously `*Package`. Now it is `*Package.Module` and all pointers
point to externally managed memory.
* fixes to get the new Fetch.zig code working. The previous commit was
work-in-progress. There are still two commented out code paths, the
one that leads to `Compilation.create` and the one for `zig build`
that fetches the entire dependency tree and creates the required
modules for the build runner.
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Organize everything around a Fetch task which does a bunch of stuff in a
worker thread without touching any shared state, and then queues up
Fetch tasks for its dependencies.
This isn't the theoretical optimal package fetching performance because
CPU cores don't necessarily map 1:1 with I/O tasks, and each fetch task
contains a mixture of computations and I/O. However, it is expected for
this to significantly outperform master branch, which fetches everything
recursively with only one thread.
The logic is now a lot more linear and easy to follow. Everything that
is embarassingly parallel is done on the thread pool, and then after
everything is fetched, the worker threads are joined and the main thread
does the finishing touches of stitching together the dependencies.zig
import files. There is only one tiny little critical section and it does
not even have any error handling in it.
This also lays the groundwork for #14281 because in system mode, all
this fetching logic will be skipped, but the "finishing touches"
mentioned above still need to be done. With this branch, that logic is
separated out and no longer recursively tangled with fetching stuff.
Additionally, this branch:
* Implements inclusion directives in `build.zig.zon` for deciding which
files belong the package (#14311).
* Adds basic documentation for `build.zig.zon` files.
* Adds support for fetching dependencies with the `file://` protocol
scheme (#17364).
* Adds a workaround for a Linux/btrfs file system bug (#17282).
This commit is a work-in-progress. Still todo:
1. Hook up the CLI to the new system.
2. Restore the module table creation logic after all the fetching is
done.
3. Fix compilation errors, get the tests passing, and regression test
against real world projects.
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zig fetch [options] <url>
zig fetch [options] <path>
Fetches a package which is found at <url> or <path> into the global
cache directory, printing the package hash to stdout.
Closes #16972
Related to #14280
Additionally, this commit:
* Adds uncompressed .tar support to package fetching
* Introduces symlink support to package fetching
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There are no functional changes in this commit.
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