[BUG] VipsOperation: class "icctransform" not found on cuda-v2.6.1-ig155 (thumbnail generation fails for JPEGs with ICC profiles)

[guptro]

Environment

• Image: ghcr.io/imagegenius/immich:cuda
• Version: v2.6.1-ig155 (Build-date: 2026-03-20)
• Host: Unraid

Bug

Thumbnail generation (AssetGenerateThumbnails) fails in bulk for JPEGs with embedded ICC color profiles with the following repeating error:

VipsOperation: class "icctransform" not found
VipsJpeg: premature end of JPEG image
Error: VipsOperation: class "icctransform" not found
  at Sharp.toBuffer (.../sharp/lib/output.js:163:17)
  at MediaRepository.decodeImage
  at async MediaService.decodeImage
  at async MediaService.extractOriginalImage
  at async MediaService.generateImageThumbnails
  at async MediaService.handleGenerateThumbnails

Investigation

• liblcms2-2 (2.14-2build1) is already installed in the container — this is not the issue
• The problem is that sharp's bundled static libvips was compiled without --with-lcms, so even though the system library exists, icctransform is not available as a vips operation
• This affects the majority of JPEG thumbnail jobs, not just a few files

Reference

PR #548 / #550 (fix: sharp install) was intended to address the sharp/libvips build issue and was merged on Apr 25, 2025. However the icctransform errors persist on the current cuda tag (v2.6.1-ig155).

The main tag may be unaffected — this appears specific to the cuda build variant.

Expected Behavior

Thumbnail generation succeeds for JPEGs with embedded ICC color profiles. The icctransform vips operation should be available, which requires libvips to be compiled with lcms2 support.

[hydazz]

This should no longer be the case (in the latest image)

vips -l includes VipsIccTransform (icc_transform), the image has liblcms2.so.2. The shipped sharp module is linked to the global libvips, not a bundled static one:

• libvips-cpp.so.42 => /usr/local/lib/libvips-cpp.so.42
• libvips.so.42 => /usr/local/lib/libvips.so.42
• liblcms2.so.2 => /usr/lib/x86_64-linux-gnu/liblcms2.so.2