Adds ICON grid support changes from ECMWF hackathon#42
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Adds ICON grid support changes from ECMWF hackathon#42
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cscs-ci run alps;system=balfrin;uarch=zen3;uenv=fdb:5.18
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cscs-ci run alps;system=balfrin;uarch=zen3;uenv=fdb:5.18
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cscs-ci run alps;system=balfrin;uarch=zen3;uenv=fdb:5.18
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Copies the changes to the ecCodes Spack package definition to this repository from the draft PR opened during the ECMWF hackathon end of October 2025.
The changes have been tested using ecCodes version 2.39.5, and appear to be working without any issue until now:
❯ grib_ls /home/lmeinen/work/icon-ch1-eps-202602111200-0-t_2m-perturb.grib2 /home/lmeinen/work/icon-ch1-eps-202602111200-0-t_2m-perturb.grib2 edition centre date dataType gridType stepRange typeOfLevel level shortName packingType 2 lssw 20260211 cp unstructured_grid 0m heightAboveGround 2 2t grid_simple 2 lssw 20260211 cp unstructured_grid 0m heightAboveGround 2 2t grid_simple 2 lssw 20260211 cp unstructured_grid 0m heightAboveGround 2 2t grid_simple 2 lssw 20260211 cp unstructured_grid 0m heightAboveGround 2 2t grid_simple 2 lssw 20260211 cp unstructured_grid 0m heightAboveGround 2 2t grid_simple 2 lssw 20260211 cp unstructured_grid 0m heightAboveGround 2 2t grid_simple 2 lssw 20260211 cp unstructured_grid 0m heightAboveGround 2 2t grid_simple 2 lssw 20260211 cp unstructured_grid 0m heightAboveGround 2 2t grid_simple 2 lssw 20260211 cp unstructured_grid 0m heightAboveGround 2 2t grid_simple 2 lssw 20260211 cp unstructured_grid 0m heightAboveGround 2 2t grid_simple 10 of 10 messages in /home/lmeinen/work/icon-ch1-eps-202602111200-0-t_2m-perturb.grib2See also: https://github.com/MeteoSwiss/nwp_polytope/pull/187
cscs-ci run alps;system=balfrin;uarch=zen3;uenv=fdb:5.18