switch to meson build

This is a work in progress effort to modernize our build machinery and use meson, recently adopted by the scipy stack.

In doing this I also follow the approach adopted by the scipy stack of using Tempita, Cython's built-in templating engine.

Rough plan:

• Change the build infrastructure to use meson-python and pyproject.toml
• Implement environment-dependent search for mumps (right now I target conda-forge) Library names can now be passed via a meson build option.
• Figure out the development workflow (running tests etc)
• Update CI
• Explore conda packaging

Also closes #19 (closed) and #11 (closed) (I cleaned up a bunch of code for a good measure).

assigned to @anton-akhmerov

marked this merge request as draft

changed title from wip: switch to meson build to draft: switch to meson build

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• 3f3a28d1 - remove old build scripts

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• 1b865358 - switch to time.perf_counter

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• c406b4bc - update meson and numpy requirements

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• f0b6ad54 - package license
• 87bdd970 - add and apply pre-commit hooks
• 5b815a47 - update requirements according to NEP29
• ffc8602d - update mumps URL
• 67ec3709 - add test function
• 4138126e - reorganize version logic
• aafccdf5 - make installation properly use a package

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• 73e9fff9 - pass tests

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• 3743e487 - pass tests

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• 2bbdf0d5 - fix version from git
• 56f2dda8 - implement dynamic version

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• db66a7d5 - implement dynamic version

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• 919feffe - implement dynamic version

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• 9e11256d - rename MUMPSContext -> Context, make it a context manage
• ba3044e2 - reuse Context in schur; closes #19 (closed)
• d27390bf - implement Cholesky factorization, use Context in nullspace

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• 8f8a2331 - add a test for solving 1x1 problem

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• a09041ad - formatting

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marked the checklist item Figure out the development workflow (running tests etc) as completed

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• 11669256 - document using spin
• c8da65ce - recommend mamba

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• 379b168d - allow providing mumps names at build time

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merged

mentioned in commit 8f837fe1

marked the checklist item Update CI as completed