mksquashfs: FATAL ERROR: SOURCE_DATE_EPOCH and command line options can't be used at the same time #739
Description
OS
NixOS 25.05
Programming Language
C++
VPK Version
Velopack CLI 0.0.1369-g1d5c984 (prerelease)
Library Version
vpk = pkgs.buildDotnetGlobalTool { pname = "vpk"; version = "0.0.1369-g1d5c984"; nugetSha256 = "sha256-8XR8AmaDVjmF+/7XtdJiar/xpzrjk+h/7sOavsf0ozQ="; # dotnet-sdk = pkgs.dotnetCorePackages.dotnet_8.sdk; dotnet-runtime = pkgs.dotnetCorePackages.runtime_8_0; };
What happened?
It seems vpk does not account for SOURCE_DATE_EPOCH being set when calling mksquashfs and then fails.
The temporary solution is to unset SOURCE_DATE_EPOCH.
Expected behaviour:
Honour SOURCE_DATE_EPOCH environment variable.
Relevant log output
VPK_LOG=trace vpk pack --packId com.test.app --packVersion 0.0.1 --packDir ~/experiments/test-velopack/dist/linux-x64/test.AppDir --mainExe test --packTitle "Test" 2>&1 | tee vpk.logex
[14:18:21 INF] Velopack CLI 0.0.1369-g1d5c984 (prerelease), for distributing applications.
[14:18:22 INF] Beginning to package Velopack release 0.0.1.
[14:18:22 INF] Releases Directory: /home/j/experiments/test-velopack/Releases
[14:18:22 INF] Starting: Pre-process steps
[14:18:22 INF] Pack directory ends with .AppDir, will skip building new one.
[14:18:22 INF] Complete: Pre-process steps
[14:18:22 INF] Starting: Building portable package
[14:18:22 INF] Compressing AppDir into squashfs filesystem
[14:18:22 FTL] Process failed: 'mksquashfs /tmp/velopack/temp.2/PreprocessPackDir.AppDir /tmp/velopack/temp.2/com.test.app.AppImage.tmpfs -comp gzip -root-owned -noappend -mkfs-time 0'
Output was -
StdErr was -
FATAL ERROR: SOURCE_DATE_EPOCH and command line options can't be used at the same time to set timestamp(s)
$ echo $SOURCE_DATE_EPOCH
315532800