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zig fetch requires a build.zig file #31866

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opened 2026年04月15日 00:48:55 +02:00 by Cloudef · 4 comments

Cloudef commented

2026年04月15日 00:48:55 +02:00

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Zig Version

0.16.0

Steps to Reproduce and Observed Behavior

zig fetch 'git+https://github.com/git/git.git#db91954e18654eeebc54c900f44c704002e1866d'
info: initialize build.zig template file with 'zig init'
info: see 'zig --help' for more options
error: no build.zig file found, in the current directory or any parent directories

Expected Behavior

As in with zig 0.15.2, I expect to see the output hash.

zig fetch 'git+https://github.com/git/git.git#db91954e18654eeebc54c900f44c704002e1866d'
N-V-__8AAG1trALqq4SJfLv7tvBkbOV2Ixb0sdeS0nB9jNsn

### Zig Version 0.16.0 ### Steps to Reproduce and Observed Behavior ```sh zig fetch 'git+https://github.com/git/git.git#db91954e18654eeebc54c900f44c704002e1866d' info: initialize build.zig template file with 'zig init' info: see 'zig --help' for more options error: no build.zig file found, in the current directory or any parent directories ``` ### Expected Behavior As in with zig 0.15.2, I expect to see the output hash. ```sh zig fetch 'git+https://github.com/git/git.git#db91954e18654eeebc54c900f44c704002e1866d' N-V-__8AAG1trALqq4SJfLv7tvBkbOV2Ixb0sdeS0nB9jNsn ```

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Cloudef added the

bug

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2026年04月15日 00:48:56 +02:00

alexrp added the

regression

build system

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2026年04月15日 00:49:17 +02:00

alexrp added this to the 0.17.0 milestone

2026年04月15日 00:49:19 +02:00

omerfirmak commented

2026年04月15日 17:25:46 +02:00

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I would assume a lot of projects rely on the previous behaviour as it allows fetching non-zig dependencies and building them thru zig build system. It would be a blocker for my project to upgrade to v0.16.0

linus commented

2026年04月15日 18:04:22 +02:00

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I think this only affects the zig fetch command, not the build system overall.

I think this only affects the `zig fetch` command, not the build system overall.

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jcollie commented

2026年04月16日 04:44:05 +02:00

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This affects more than non-Zig dependencies, I use zig fetch in an empty directory to download dependencies for Nix packages.

This affects more than non-Zig dependencies, I use `zig fetch` in an empty directory to download dependencies for Nix packages.

jcollie referenced this issue from a commit

2026年04月16日 04:46:43 +02:00

Use Zig 0.15 to build cache for Zig 0.16 builds.

Cloudef commented

2026年04月19日 12:16:06 +02:00

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@jcollie note that your fix isn't enough as 0.16 uses compressed cache now. See how I changed zig2nix here https://github.com/Cloudef/zig2nix/issues/54

@jcollie note that your fix isn't enough as 0.16 uses compressed cache now. See how I changed zig2nix here <https://github.com/Cloudef/zig2nix/issues/54>

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andrewrk referenced this issue from a commit

2026年04月21日 01:38:15 +02:00

zig fetch: detect global vs local mode via --save

andrewrk referenced this issue from a pull request that will close it,

2026年04月21日 01:45:14 +02:00

package fetching fixes and enhancements #31992

andrewrk referenced this issue from a commit

2026年04月21日 03:48:21 +02:00

zig fetch: detect global vs local mode via --save

andrewrk closed this issue

2026年04月21日 18:06:26 +02:00

alexrp modified the milestone from 0.17.0 to (deleted)

2026年04月21日 21:01:38 +02:00

alexrp modified the milestone from (deleted) to 0.17.0

2026年04月21日 22:57:31 +02:00

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