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# Alternatives to released versions | ||
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## Using a tagged version | ||
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Go to [to the tags page](https://github.com/zigzap/zap/tags) to view all | ||
available tagged versions of zap. From there, right click on the `tar.gz` link | ||
to copy the URL to put into your `build.zig.zon`. | ||
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After changing the `.url` field, you will get an error like this at the next | ||
attempt to `zig build`: | ||
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``` | ||
.../build.zig.zon:8:21: error: hash mismatch: | ||
expected: 12205fd0b60720fb2a40d82118ee75c15cb5589bb9faf901c8a39a93551dd6253049, | ||
found: 1220f4ea8be4a85716ae1362d34c077dca10f10d1baf9196fc890e658c56f78b7424 | ||
.hash = "12205fd0b60720fb2a40d82118ee75c15cb5589bb9faf901c8a39a93551dd6253049", | ||
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | ||
``` | ||
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**Note:** If you don't get this error, clean your global zig cache: `rm -fr | ||
~/.cache/zig`. This shouldn't happen with current zig master anymore. | ||
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With the new URL, the old hash in the `build.zig.zon` is no longer valid. You | ||
need to take the hash value displayed after `found: ` in the error message as | ||
the `.hash` value in `build.zig.zon`. | ||
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## Using an arbitrary (last) commit | ||
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Use the same workflow as above for tags, excpept for the URL, use this schema: | ||
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```zig | ||
.url = "https://github.com/zigzap/zap/archive/[COMMIT-HASH].tar.gz", | ||
``` | ||
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Replace `[COMMIT-HASH]` with the full commit hash as provided, e.g. by `git | ||
log`. | ||
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