Ngsolve: init at 6.2.2501

[qbisi]

Too many patches but work

Things done

built/tested on aarch64/x86-64 linux

individial test example of ngsolve can be found on https://github.com/[qbisi/ngsolve-devenv](https://github.com/qbisi/ngsolve-devenv)

RFC

the solver preferrence of ngsolve:
superLu(upstream work in progress) >pardiso (unfree) > mumps(with mpi) > sparsecholesky (builtin) > umfpack (depend on nixpkgs#suitesparse)

for now mumps(with mpi) has the highest priority on nixpkgs#ngsolve
however use of mumps require mpi init, for pytest example add
from mpi4py input MPI

while pypi and launchpad provide user with unfree pardiso support (do not require mpi init)

beginner might be confused of their code not running correctly with nixpkgs#ngsolve

• Built on platform(s)
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin
• For non-Linux: Is sandboxing enabled in nix.conf? (See Nix manual)
  • sandbox = relaxed
  • sandbox = true
• Tested, as applicable:
  • NixOS test(s) (look inside nixos/tests)
  • and/or package tests
  • or, for functions and "core" functionality, tests in lib/tests or pkgs/test
  • made sure NixOS tests are linked to the relevant packages
• Tested compilation of all packages that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage
• Tested basic functionality of all binary files (usually in ./result/bin/)
• 24.11 Release Notes (or backporting 23.11 and 24.05 Release notes)
  • (Package updates) Added a release notes entry if the change is major or breaking
  • (Module updates) Added a release notes entry if the change is significant
  • (Module addition) Added a release notes entry if adding a new NixOS module
• Fits CONTRIBUTING.md.

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