Sass – Build Information – Swift Package Index

Track the adoption of Swift 6 strict concurrency checks for data race safety. How many packages are Ready for Swift 6?

Build Information

Failed to build Sass, reference master (76d5ab), with Swift 6.1 for Linux on 25 Apr 2025 14:25:05 UTC.

Build Command

bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.1-latest swift build --triple x86_64-unknown-linux-gnu 2>&1

Build Log

========================================
RunAll
========================================
Builder version: 4.61.0
Interrupt handler set up.
========================================
Checkout
========================================
Clone URL: https://github.com/robinwalterfit/swift-sass.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/robinwalterfit/swift-sass
 * branch            master     -> FETCH_HEAD
 * [new branch]      master     -> origin/master
HEAD is now at 76d5ab7 Update notes
Cloned https://github.com/robinwalterfit/swift-sass.git
Revision (git rev-parse @):
76d5ab7db35a29a60dd6a10f3ac662c17975b240
SUCCESS checkout https://github.com/robinwalterfit/swift-sass.git at master
========================================
Build
========================================
Selected platform:         linux
Swift version:             6.1
Building package at path:  $PWD
https://github.com/robinwalterfit/swift-sass.git
https://github.com/robinwalterfit/swift-sass.git
WARNING: environment variable SUPPRESS_SWIFT_6_FLAGS is not set
{
  "dependencies" : [
    {
      "identity" : "swift-libsass",
      "requirement" : {
        "range" : [
          {
            "lower_bound" : "1.0.0",
            "upper_bound" : "2.0.0"
          }
        ]
      },
      "type" : "sourceControl",
      "url" : "https://github.com/robinwalterfit/Swift-libsass.git"
    }
  ],
  "manifest_display_name" : "Sass",
  "name" : "Sass",
  "path" : "/host/spi-builder-workspace",
  "platforms" : [
  ],
  "products" : [
    {
      "name" : "Sass",
      "targets" : [
        "Sass"
      ],
      "type" : {
        "library" : [
          "automatic"
        ]
      }
    }
  ],
  "targets" : [
    {
      "c99name" : "SassTests",
      "module_type" : "SwiftTarget",
      "name" : "SassTests",
      "path" : "Tests/SassTests",
      "sources" : [
        "SassTests.swift"
      ],
      "target_dependencies" : [
        "Sass"
      ],
      "type" : "test"
    },
    {
      "c99name" : "Sass",
      "module_type" : "SwiftTarget",
      "name" : "Sass",
      "path" : "Sources/Sass",
      "product_memberships" : [
        "Sass"
      ],
      "sources" : [
        "Sass+Options.swift",
        "Sass.swift"
      ],
      "type" : "library"
    }
  ],
  "tools_version" : "4.0"
}
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.1-latest swift build --triple x86_64-unknown-linux-gnu -Xswiftc -Xfrontend -Xswiftc -stats-output-dir -Xswiftc -Xfrontend -Xswiftc .stats -Xswiftc -strict-concurrency=complete -Xswiftc -enable-upcoming-feature -Xswiftc StrictConcurrency -Xswiftc -enable-upcoming-feature -Xswiftc DisableOutwardActorInference -Xswiftc -enable-upcoming-feature -Xswiftc GlobalActorIsolatedTypesUsability -Xswiftc -enable-upcoming-feature -Xswiftc InferSendableFromCaptures 2>&1
basic-6.1-latest: Pulling from finestructure/spi-images
Digest: sha256:3bdcac04179f4ed3e5b8e9dbd6e74bbf5ebc0f4fde48bbaad7d1e5c757e65bcb
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.1-latest
Fetching https://github.com/robinwalterfit/Swift-libsass.git
[1/17] Fetching swift-libsass
Fetched https://github.com/robinwalterfit/Swift-libsass.git from cache (0.21s)
Computing version for https://github.com/robinwalterfit/Swift-libsass.git
Computed https://github.com/robinwalterfit/Swift-libsass.git at 1.0.0 (1.20s)
Creating working copy for https://github.com/robinwalterfit/Swift-libsass.git
Working copy of https://github.com/robinwalterfit/Swift-libsass.git resolved at 1.0.0
warning: 'swift-libsass': ignoring declared target(s) 'libsass' in the system package
warning: 'spi-builder-workspace': dependency 'swift-libsass' is not used by any target
warning: you may be able to install libsass using your system-packager:
    apt-get install libsass
warning: you may be able to install libsass using your system-packager:
    apt-get install libsass
Building for debugging...
[0/2] Write sources
[1/2] Write swift-version-24593BA9C3E375BF.txt
error: emit-module command failed with exit code 1 (use -v to see invocation)
[3/5] Emitting module Sass
<module-includes>:1:10: note: in file included from <module-includes>:1:
1 | #include "shim.h"
  |          `- note: in file included from <module-includes>:1:
2 |
/host/spi-builder-workspace/.build/checkouts/Swift-libsass/shim.h:4:10: error: 'sass.h' file not found
2 | #define __LIBSASS_SHIM_H__
3 |
4 | #include <sass.h>
  |          `- error: 'sass.h' file not found
5 |
6 | #endif
/host/spi-builder-workspace/Sources/Sass/Sass+Options.swift:27:8: error: could not build C module 'libsass'
 25 | import Foundation
 26 |
 27 | import libsass
    |        `- error: could not build C module 'libsass'
 28 |
 29 | /**
[4/5] Compiling Sass Sass+Options.swift
<module-includes>:1:10: note: in file included from <module-includes>:1:
1 | #include "shim.h"
  |          `- note: in file included from <module-includes>:1:
2 |
/host/spi-builder-workspace/.build/checkouts/Swift-libsass/shim.h:4:10: error: 'sass.h' file not found
2 | #define __LIBSASS_SHIM_H__
3 |
4 | #include <sass.h>
  |          `- error: 'sass.h' file not found
5 |
6 | #endif
/host/spi-builder-workspace/Sources/Sass/Sass+Options.swift:27:8: error: could not build C module 'libsass'
 25 | import Foundation
 26 |
 27 | import libsass
    |        `- error: could not build C module 'libsass'
 28 |
 29 | /**
[5/5] Compiling Sass Sass.swift
<module-includes>:1:10: note: in file included from <module-includes>:1:
1 | #include "shim.h"
  |          `- note: in file included from <module-includes>:1:
2 |
/host/spi-builder-workspace/.build/checkouts/Swift-libsass/shim.h:4:10: error: 'sass.h' file not found
2 | #define __LIBSASS_SHIM_H__
3 |
4 | #include <sass.h>
  |          `- error: 'sass.h' file not found
5 |
6 | #endif
/host/spi-builder-workspace/Sources/Sass/Sass+Options.swift:27:8: error: could not build C module 'libsass'
 25 | import Foundation
 26 |
 27 | import libsass
    |        `- error: could not build C module 'libsass'
 28 |
 29 | /**
Running build ...
bash -c docker run --pull=always --rm -v "checkouts-4609320-1":/host -w "$PWD" registry.gitlab.com/finestructure/spi-images:basic-6.1-latest swift build --triple x86_64-unknown-linux-gnu 2>&1
basic-6.1-latest: Pulling from finestructure/spi-images
Digest: sha256:3bdcac04179f4ed3e5b8e9dbd6e74bbf5ebc0f4fde48bbaad7d1e5c757e65bcb
Status: Image is up to date for registry.gitlab.com/finestructure/spi-images:basic-6.1-latest
warning: 'swift-libsass': ignoring declared target(s) 'libsass' in the system package
warning: 'spi-builder-workspace': dependency 'swift-libsass' is not used by any target
warning: you may be able to install libsass using your system-packager:
    apt-get install libsass
warning: you may be able to install libsass using your system-packager:
    apt-get install libsass
[0/1] Planning build
Building for debugging...
[0/1] Write swift-version-24593BA9C3E375BF.txt
[2/4] Compiling Sass Sass.swift
<module-includes>:1:10: note: in file included from <module-includes>:1:
1 | #include "shim.h"
  |          `- note: in file included from <module-includes>:1:
2 |
/host/spi-builder-workspace/.build/checkouts/Swift-libsass/shim.h:4:10: error: 'sass.h' file not found
2 | #define __LIBSASS_SHIM_H__
3 |
4 | #include <sass.h>
  |          `- error: 'sass.h' file not found
5 |
6 | #endif
/host/spi-builder-workspace/Sources/Sass/Sass+Options.swift:27:8: error: could not build C module 'libsass'
 25 | import Foundation
 26 |
 27 | import libsass
    |        `- error: could not build C module 'libsass'
 28 |
 29 | /**
[3/4] Compiling Sass Sass+Options.swift
<module-includes>:1:10: note: in file included from <module-includes>:1:
1 | #include "shim.h"
  |          `- note: in file included from <module-includes>:1:
2 |
/host/spi-builder-workspace/.build/checkouts/Swift-libsass/shim.h:4:10: error: 'sass.h' file not found
2 | #define __LIBSASS_SHIM_H__
3 |
4 | #include <sass.h>
  |          `- error: 'sass.h' file not found
5 |
6 | #endif
/host/spi-builder-workspace/Sources/Sass/Sass+Options.swift:27:8: error: could not build C module 'libsass'
 25 | import Foundation
 26 |
 27 | import libsass
    |        `- error: could not build C module 'libsass'
 28 |
 29 | /**
error: emit-module command failed with exit code 1 (use -v to see invocation)
[4/4] Emitting module Sass
<module-includes>:1:10: note: in file included from <module-includes>:1:
1 | #include "shim.h"
  |          `- note: in file included from <module-includes>:1:
2 |
/host/spi-builder-workspace/.build/checkouts/Swift-libsass/shim.h:4:10: error: 'sass.h' file not found
2 | #define __LIBSASS_SHIM_H__
3 |
4 | #include <sass.h>
  |          `- error: 'sass.h' file not found
5 |
6 | #endif
/host/spi-builder-workspace/Sources/Sass/Sass+Options.swift:27:8: error: could not build C module 'libsass'
 25 | import Foundation
 26 |
 27 | import libsass
    |        `- error: could not build C module 'libsass'
 28 |
 29 | /**
BUILD FAILURE 6.1 linux