Fix: xl drop dawn/dawncut

[SebastianPaucar]

Briefly, what does this PR introduce? Please link to any relevant presentations or discussions.

This PR drops dawn and dawncut from xl/spack.yaml. No buildcache coverage and the URL source was broken. Look at this in https://github.com/eic/eic-spack/blob/develop/spack_repo/eic/packages/dawncut/package.py

    # dawn webpage not available anymore
    homepage = "https://geant4.kek.jp/~tanaka"
    url = "http://geant4.kek.jp/~tanaka/src/dawncut_1_54a.taz"
    maintainers = ["sly2j"]

This fixes fetch and SSL errors on build eic xl on * CI checks. With dawn and dawncut both removed from xl/spack.yaml, eic_xl now successfully concretized and built on amd64, amd64_v3, and arm64. Verified in #388. cc @wdconinc

What is the urgency of this PR?

• High (please describe reason below)
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• Low

What kind of change does this PR introduce?

• Bug fix (issue #__)
• New feature (issue #__)
• Optimization (issue #__)
• Updated documentation
• other: __

Please check if any of the following apply

• This PR introduces breaking changes. Please describe changes users need to make below.
• This PR changes default behavior. Please describe changes below.
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[wdconinc]

Yeah, but we still use dawn in github.com/eic/epic...

[wdconinc]

The source is supposed to be found in the new eic-spack-mirror repository, and that works with my local spack but somehow not in the container build. Can you see why? That would be preferred.

Other option is the project https://github.com/eic/dusk but that's not quite ready I fear.

[SebastianPaucar]

The source is supposed to be found in the new eic-spack-mirror repository, and that works with my local spack but somehow not in the container build. Can you see why? That would be preferred.

Other option is the project https://github.com/eic/dusk but that's not quite ready I fear.

Digging into it. I will let you know.

[github-actions]

Capybara summary for PR 407

• rec_dis_10x100_minQ2=1000_epic_craterlake_amd64 (Δ: 1) (new artifact) (ref artifact)
• rec_dis_10x100_minQ2=1_epic_craterlake_amd64 (Δ: 1) (new artifact) (ref artifact)
• rec_dis_18x275_minQ2=1000_epic_craterlake_amd64 (Δ: 1) (new artifact) (ref artifact)
• rec_dis_18x275_minQ2=1_epic_craterlake_amd64 (Δ: 1) (new artifact) (ref artifact)
• rec_dis_5x41_minQ2=1_epic_craterlake_amd64 (Δ: 1) (new artifact) (ref artifact)
• rec_dis_5x41_minQ2=1_epic_craterlake_amd64_vs_arm64 (Δ: 4247)
• rec_dis_5x41_minQ2=1_epic_craterlake_arm64 (Δ: 1) (new artifact) (ref artifact)
• rec_e_1GeV_20GeV_epic_craterlake_amd64 (Δ: 1) (new artifact) (ref artifact)
• rec_e_1GeV_20GeV_epic_craterlake_amd64_vs_arm64 (Δ: 3504)
• rec_e_1GeV_20GeV_epic_craterlake_arm64 (Δ: 1) (new artifact) (ref artifact)
• rec_pi_1GeV_20GeV_epic_craterlake_amd64 (Δ: 1) (new artifact) (ref artifact)
• rec_pi_1GeV_20GeV_epic_craterlake_amd64_vs_arm64 (Δ: 3657)
• rec_pi_1GeV_20GeV_epic_craterlake_arm64 (Δ: 1) (new artifact) (ref artifact)
• sim_dis_10x100_minQ2=1000_epic_craterlake_amd64 (Δ: 1) (new artifact) (ref artifact)
• sim_dis_10x100_minQ2=1_epic_craterlake_amd64 (Δ: 1) (new artifact) (ref artifact)
• sim_dis_18x275_minQ2=1000_epic_craterlake_amd64 (Δ: 1) (new artifact) (ref artifact)
• sim_dis_18x275_minQ2=1_epic_craterlake_amd64 (Δ: 1) (new artifact) (ref artifact)
• sim_dis_5x41_minQ2=1_epic_craterlake_amd64 (Δ: 1) (new artifact) (ref artifact)
• sim_dis_5x41_minQ2=1_epic_craterlake_amd64_vs_arm64 (Δ: 395)
• sim_dis_5x41_minQ2=1_epic_craterlake_arm64 (Δ: 1) (new artifact) (ref artifact)
• sim_e_1GeV_20GeV_epic_craterlake_amd64 (Δ: 1) (new artifact) (ref artifact)
• sim_e_1GeV_20GeV_epic_craterlake_amd64_vs_arm64 (Δ: 359)
• sim_e_1GeV_20GeV_epic_craterlake_arm64 (Δ: 1) (new artifact) (ref artifact)
• sim_pi_1GeV_20GeV_epic_craterlake_amd64 (Δ: 1) (new artifact) (ref artifact)
• sim_pi_1GeV_20GeV_epic_craterlake_amd64_vs_arm64 (Δ: 359)
• sim_pi_1GeV_20GeV_epic_craterlake_arm64 (Δ: 1) (new artifact) (ref artifact)
  ^{_{Last updated 2026-09-01T20:08-04:00 a3ffd00}}

[wdconinc]

So, when I run ./scripts/build-base.sh with the following diff:

diff --git a/containers/debian/Dockerfile b/containers/debian/Dockerfile
index 613f810e..eaafe8f2 100644
--- a/containers/debian/Dockerfile
+++ b/containers/debian/Dockerfile
@@ -358,6 +358,12 @@ git -C ${EICSPACK_ROOT} checkout ${EICSPACK_SHA:-${EICSPACK_VERSION}}
 spack repo add --scope spack "${EICSPACK_ROOT}/spack_repo/eic"
 EOF
 
+RUN --mount=type=cache,target=/var/cache/spack <<EOF
+set -e
+spack stage dawn
+spack stage dawncut
+EOF
+
 ## Workaround for Spack creating config files with limited permissions (see https://github.com/spack/spack/issues/52651)
 RUN chmod 644 ${SPACK_ROOT}/etc/spack/*.yaml ${HOME}/.spack/*.yaml

I get the following:

#27 [stage-0 16/18] RUN --mount=type=cache,target=/var/cache/spack <<EOF (set -e...)
#27 2.344 ==> Warning: The following issues were ignored while updating the indices of binary caches:
#27 2.344 FetchIndexError: Could not fetch manifest from https://ghcr.io/v2/eic/spack-v2026.06.0/manifests/index.spack, due to: GET https://ghcr.io/v2/eic/spack-v2026.06.0/manifests/index.spack returned 404: Not Found
#27 2.344 ==> Warning: the mirror at https://binaries.spack.io/v1.2.2 cannot be used in concretization (no index found)
#27 14.36 ==> Staged dawn in /tmp/root/spack-stage/spack-stage-dawn-3_91a-e36t4oaeg3z64ot3n5fg5zchyc4hxclb
#27 17.11 ==> Warning: The following issues were ignored while updating the indices of binary caches:
#27 17.11 FetchIndexError: Could not fetch manifest from https://ghcr.io/v2/eic/spack-v2026.06.0/manifests/index.spack, due to: GET https://ghcr.io/v2/eic/spack-v2026.06.0/manifests/index.spack returned 404: Not Found
#27 17.11 ==> Warning: the mirror at https://binaries.spack.io/v1.2.2 cannot be used in concretization (no index found)
#27 29.00 ==> Staged dawncut in /tmp/root/spack-stage/spack-stage-dawncut-1_54a-sqn7g6cafpkqerp22fssela3jszhtb4j
#27 DONE 29.5s

which seems to indicate the staging pulls correctly from the eic-spack-mirror source mirror (ignore the other warnings... different mirrors).