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