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Concretizer errors are very confusing when an undefined (or deprecated) version is requested via an environment.

bugSomething isn't workingSomething isn't working

triageThe issue needs to be prioritizedThe issue needs to be prioritized

Status: Open.

#51785 In spack/spack;

· Paul-Ferrell opened on Dec 18, 2025

Constraining test dependencies without <code>when</code> are merged with non-test dependencies

bugSomething isn't workingSomething isn't working

triageThe issue needs to be prioritizedThe issue needs to be prioritized

Status: Open.

#51775 In spack/spack;

· wdconinc opened on Dec 17, 2025

Parallel concretization updates the local build cache index in parallel

bugSomething isn't workingSomething isn't working

triageThe issue needs to be prioritizedThe issue needs to be prioritized

Status: Open.

#51770 In spack/spack;

· haampie opened on Dec 16, 2025

<code>(%&lt;virtual&gt;).satisfies(%&lt;virtual&gt;)</code> is False

bugSomething isn't workingSomething isn't working

impact-medium

Status: Open.

Bug

#51768 In spack/spack;

· alalazo opened on Dec 16, 2025

pipelines: <code>aws-pcluster-*</code> pipelines are failing build jobs consistently

bugSomething isn't workingSomething isn't working

impact-high

pipelinesIssues related to spack's pipeline featuresIssues related to spack's pipeline features

Status: Open.

Bug

#51765 In spack/spack;

· alalazo opened on Dec 16, 2025

Only external, or concrete, compilers are allowed

bugSomething isn't workingSomething isn't working

triageThe issue needs to be prioritizedThe issue needs to be prioritized

Status: Open.

#51751 In spack/spack;

· skwde opened on Dec 15, 2025

Limit recusion when creating symlink-based environment views

featureA feature is missing in SpackA feature is missing in Spack

Status: Open.

#51741 In spack/spack;

· haampie opened on Dec 12, 2025

Modified timestamps are zeroed out for cached VCS sources

bugSomething isn't workingSomething isn't working

triageThe issue needs to be prioritizedThe issue needs to be prioritized

Status: Open.

#51740 In spack/spack;

· blue42u opened on Dec 12, 2025

New Installer: does not fetch from build cache without index

bugSomething isn't workingSomething isn't working

snl-core-teamIssue for SNL Spack developersIssue for SNL Spack developers

triageThe issue needs to be prioritizedThe issue needs to be prioritized

Status: Open.

#51738 In spack/spack;

· psakievich opened on Dec 11, 2025

The spec parser depends on the global configuration

bugSomething isn't workingSomething isn't working

triageThe issue needs to be prioritizedThe issue needs to be prioritized

Status: Open.

#51727 In spack/spack;

· alalazo opened on Dec 10, 2025

New installer: multi-node support

featureA feature is missing in SpackA feature is missing in Spack

Status: Open.

#51721 In spack/spack;

· haampie opened on Dec 9, 2025

"Getting started" does not mention the minimal requirements / spack does not check the minimal prerequisites

bugSomething isn't workingSomething isn't working

triageThe issue needs to be prioritizedThe issue needs to be prioritized

Status: Open.

#51711 In spack/spack;

· Sbozzolo opened on Dec 8, 2025