gdal raster calc and -i nested pipeline, proper usage?

Scott via gdal-dev <[email protected]> Sun, 5 Apr 2026 13:14:17 -0700

Newsgroups	gmane.comp.gis.gdal.devel
Message-ID	<[email protected]>

Greetings,

Is the following proper usage?

gdal raster pipeline \
    ! calc -i [ ! stack --resolution=highest -i *.tif ! materialize ] 
--flatten --calc=mean --dialect=builtin \
    ! write -o result.tif --co COMPRESS=DEFLATE --overwrite

...results in the error:

ERROR 1: Failed to open $$nested_pipeline_0x563f54398d00$$
0...10...20...30...40...50...60...70...80...90...100 - done.

Removing materialize altogether or adding -o tmp.tif to materialize 
results in the same error.

Debian 12
GDAL 3.13.0dev-8e81b0c5db, released 2026/03/24

Thanks!
Scott

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