compiler_mixing: config option applies per-language#51796
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alalazo merged 1 commit intospack:developfrom Jan 16, 2026
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compiler_mixing: config option applies per-language#51796alalazo merged 1 commit intospack:developfrom
compiler_mixing: config option applies per-language#51796alalazo merged 1 commit intospack:developfrom
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alalazo
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Jan 13, 2026
When `compiler_mixing: false` is configured, Spack was forcing the C, C++, and Fortran compilers to be the same across all dependencies. The intent was rather to restrict this on a per-language basis, and this commit does that (and adds a test for it). Signed-off-by: Peter Scheibel <scheibel1@llnl.gov>
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alalazo
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Jan 16, 2026
alecbcs
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Feb 6, 2026
* Revert "ci: disable tutorial pipeline (#3249)" * Revert "tutorial stack: use when_possible and bootstrap gcc12 (new container) (#2277)" This commit re-enables the tutorial stack without using `when_possible` which was leading to extremely long multi round concretization times post spack/spack#51796. Although this implementation of the tutorial stack is not technically correct when using compilers as nodes, it'll allow us to continue to ensure that all of the components of the stack build and are not accidentally broken due to a package PR. The long term solution here is to merge spack/spack#51891 which allows for multiple concretization groups in an environment and thus allows us to bootstrap a gcc compiler and then use it to build additional specs in the tutorial. --------- Signed-off-by: Gregory Becker <becker33@llnl.gov>
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If you set
then it should allow using different compilers for C and Fortran. As it was, #51135 was forcing all dependencies to use the same compiler for all languages.
This also updates the error generation to provide more info about which languages generated a mixing violation (when mixing is disallowed), and the compilers that were selected.