50 lines
1.1 KiB
Nix
50 lines
1.1 KiB
Nix
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import ./make-test-python.nix ({ pkgs, ... }:
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let
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fenicsScript = pkgs.writeScript "poisson.py" ''
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#!/usr/bin/env python
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from dolfin import *
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mesh = UnitSquareMesh(4, 4)
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V = FunctionSpace(mesh, "Lagrange", 1)
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def boundary(x):
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return x[0] < DOLFIN_EPS or x[0] > 1.0 - DOLFIN_EPS
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u0 = Constant(0.0)
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bc = DirichletBC(V, u0, boundary)
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u = TrialFunction(V)
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v = TestFunction(V)
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f = Expression("10*exp(-(pow(x[0] - 0.5, 2) + pow(x[1] - 0.5, 2)) / 0.02)", degree=2)
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g = Expression("sin(5*x[0])", degree=2)
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a = inner(grad(u), grad(v))*dx
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L = f*v*dx + g*v*ds
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u = Function(V)
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solve(a == L, u, bc)
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print(u)
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'';
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in
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{
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name = "fenics";
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meta = {
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maintainers = with pkgs.lib.maintainers; [ knedlsepp ];
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};
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nodes = {
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fenicsnode = { pkgs, ... }: {
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environment.systemPackages = with pkgs; [
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gcc
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(python3.withPackages (ps: with ps; [ fenics ]))
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];
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};
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};
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testScript =
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{ nodes, ... }:
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''
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start_all()
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fenicsnode.succeed("${fenicsScript}")
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'';
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})
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