[RELEASE] release-2.1.0 tasks

[climbfuji]

Release task list

Project board: #1835

Release timeline

• Feature freeze for deployment of release candidate: 2/13/2026
• Code freeze for deployment of release and final testing: 2/23/2026
• Release date: February 27, 2026 March 13, 2026

Tasks

• Create release branches release/2.1 for spack, spack-packages, and spack-stack (update .gitmodules in spack-stack accordingly)
• Clear project board (no open pull requests other than for specific site configs or documentation)
• Prepare Wiki page for release (https://github.com/jcsda/spack-stack/wiki): https://github.com/JCSDA/spack-stack/wiki/Release-2.1.0
• Roll out release 2.1.0 from release branch release/2.1 and update documentation (readthedocs), site config, and wiki page each time
  • Acorn (NOAA-EMC)
  • Atlantis (NRL)
  • Blueback (NRL)
  • Derecho (EPIC@climbfuji)
  • Discover (JCSDA)
  • Gaea (EPIC)
  • Hercules (EPIC)
  • Narwhal (NRL)
  • NAS (NASA)
  • Nautilus (NRL)
  • Orion (EPIC)
  • Ursa (EPIC)
  • JCSDA AWS Parallelcluster (JCSDA)
  • JCSDA AWS AMI (JCSDA)
  • JCSDA CI containers (JCSDA)
  • NAVY PW AWS (NRL)
  • NOAA PW AWS (EPIC)
  • NOAA PW Azure (EPIC)
  • NOAA PW Gcloud (EPIC)
• Tag repositories spack, spack-packages, and spack-stack (update .gitmodules in spack-stack accordingly)
  • Update .gitmodules: use tags spack-stack-2.1.0 #1955
• Finalize Wiki page for release (https://github.com/jcsda/spack-stack/wiki)
• Prepare and publish release notes: https://github.com/JCSDA/spack-stack/releases
  • https://github.com/JCSDA/spack-stack/releases
• As needed, merge pull requests into release branches back into develop / spack-stack-dev
  • [release/2.1] Update Derecho site config #1937
  • [skip ci] add oneapi@2025.3.1 compilers and oneapi@2021.17 MPI #1941
  • [site config] aws-ec2 ubuntu config updates for 2.1 release #1940
  • Update zlib version on derecho and add gaea-c6 compiler package configs for release 2.1 #1947
  • Release/2.1 noaa aws #1950
  • Discover updates for spack-stack 2.1 #1952 (with changes to the ewok-env/ecflow logic)
  • Containers and ec2 changes for 2.1 release #1954
• Close GitHub project

[natalie-perlin]

Information for Wiki/documentation about environment locations with the spack-stack-2.1 on NOAA-AWS Rocky9:
/contrib/spack-stack-rocky9/spack-stack-2.1/envs/ue-oneapi-2025.3.0/
/contrib/spack-stack-rocky9/spack-stack-2.1/envs/ue-gcc-12.4.0

[climbfuji]

Information for Wiki/documentation about environment locations with the spack-stack-2.1 on NOAA-AWS Rocky9: /contrib/spack-stack-rocky9/spack-stack-2.1/envs/ue-oneapi-2025.3.0/ /contrib/spack-stack-rocky9/spack-stack-2.1/envs/ue-gcc-12.4.0

This info goes into the Wiki, see https://github.com/jcsda/spack-stack/wiki/Release-2.1.0