gnu: python-petsc4py: Fix build with python 3.8.
* gnu/packages/maths.scm (python-petsc4py)[source]: Add snippet. [native-inputs]: New field.
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@ -2470,7 +2470,18 @@ (define-public python-petsc4py
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(uri (pypi-uri "petsc4py" version))
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(sha256
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(base32
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"1rm1qj5wlkhxl39by9n78lh3gbmii31wsnb8j1rr5hvfr5xgbx2q"))))
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"1rm1qj5wlkhxl39by9n78lh3gbmii31wsnb8j1rr5hvfr5xgbx2q"))
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(modules '((guix build utils)))
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(snippet
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'(begin
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;; Ensure source file is regenerated in the build phase.
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(delete-file "src/petsc4py.PETSc.c")
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;; Remove legacy GC code. See
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;; https://bitbucket.org/petsc/petsc4py/issues/125.
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(substitute* "src/PETSc/cyclicgc.pxi"
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((".*gc_refs.*") "" )
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((".*PyGC_Head.*") ""))
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#t))))
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(build-system python-build-system)
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(arguments
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`(#:phases
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@ -2482,6 +2493,8 @@ (define-public python-petsc4py
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#t))
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(add-before 'check 'mpi-setup
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,%openmpi-setup))))
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(native-inputs
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`(("python-cython" ,python-cython)))
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(inputs
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`(("petsc" ,petsc-openmpi)
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("python-numpy" ,python-numpy)))
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