Swift Package IndexBuild Information
Failed to build x11-example, reference master (143d4a), with Swift 6.3 for Wasm on 10 Apr 2026 20:16:35 UTC.
Build Command
bash -c docker run --pull=always --rm -v "checkouts-4609320-3":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/swiftpackageindex/spi-images:wasm-6.3-latest swift build --swift-sdk swift-6.3-RELEASE_wasm 2>&1Build Log
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RunAll
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Builder version: 4.70.0
Interrupt handler set up.
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Checkout
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Clone URL: https://github.com/terhechte/swift-x11-example.git
Reference: master
Initialized empty Git repository in /host/spi-builder-workspace/.git/
hint: Using 'master' as the name for the initial branch. This default branch name
hint: is subject to change. To configure the initial branch name to use in all
hint: of your new repositories, which will suppress this warning, call:
hint:
hint: git config --global init.defaultBranch <name>
hint:
hint: Names commonly chosen instead of 'master' are 'main', 'trunk' and
hint: 'development'. The just-created branch can be renamed via this command:
hint:
hint: git branch -m <name>
From https://github.com/terhechte/swift-x11-example
* branch master -> FETCH_HEAD
* [new branch] master -> origin/master
HEAD is now at 143d4ab Merge pull request #3 from aestesis/master
Cloned https://github.com/terhechte/swift-x11-example.git
Revision (git rev-parse @):
143d4abfd517fdca5500b04783479df07ed97429
SUCCESS checkout https://github.com/terhechte/swift-x11-example.git at master
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Build
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Selected platform: wasm
Swift version: 6.3
Building package at path: $PWD
https://github.com/terhechte/swift-x11-example.git
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-3":/host -w "$PWD" -e JAVA_HOME="/root/.sdkman/candidates/java/current" -e SPI_BUILD="1" -e SPI_PROCESSING="1" registry.gitlab.com/swiftpackageindex/spi-images:wasm-6.3-latest swift build --swift-sdk swift-6.3-RELEASE_wasm 2>&1
wasm-6.3-latest: Pulling from swiftpackageindex/spi-images
Digest: sha256:d69f4e7582c319245442d62a08b2d7c7fd5a0c0c69f5d2ef11d1530cd8d3329b
Status: Image is up to date for registry.gitlab.com/swiftpackageindex/spi-images:wasm-6.3-latest
Fetching https://github.com/aestesis/X11.git
[1/35] Fetching x11
Fetched https://github.com/aestesis/X11.git from cache (0.23s)
Computing version for https://github.com/aestesis/X11.git
Computed https://github.com/aestesis/X11.git at 1.0.2 (0.70s)
Creating working copy for https://github.com/aestesis/X11.git
Working copy of https://github.com/aestesis/X11.git resolved at 1.0.2
warning: 'x11': ignoring declared target(s) 'X11' in the system package
Building for debugging...
[0/5] Write sources
[1/5] Write swift-version-24593BA9C3E375BF.txt
error: emit-module command failed with exit code 1 (use -v to see invocation)
[3/7] Emitting module DEMO
/host/spi-builder-workspace/.build/checkouts/X11/module.modulemap:4:16: error: header '/usr/include/X11/Xlib.h' not found
2 | header "macros.h"
3 | module Xlib {
4 | header "/usr/include/X11/Xlib.h"
| `- error: header '/usr/include/X11/Xlib.h' not found
5 | }
6 | module X {
/host/spi-builder-workspace/main.swift:1:8: error: could not build C module 'X11'
1 | import X11.Xlib
| `- error: could not build C module 'X11'
2 | import X11.X
3 |
[4/7] Compiling DEMO main.swift
/host/spi-builder-workspace/.build/checkouts/X11/module.modulemap:4:16: error: header '/usr/include/X11/Xlib.h' not found
2 | header "macros.h"
3 | module Xlib {
4 | header "/usr/include/X11/Xlib.h"
| `- error: header '/usr/include/X11/Xlib.h' not found
5 | }
6 | module X {
/host/spi-builder-workspace/main.swift:1:8: error: could not build C module 'X11'
1 | import X11.Xlib
| `- error: could not build C module 'X11'
2 | import X11.X
3 |
BUILD FAILURE 6.3 wasm