CVXPY
Minimize
  Sum(Hstack(x), None, False)
Subject To
 8: 1.0 <= x
Bounds
 x free
End
----------------------------------------
AFTER COMPILATION
Minimize
  x_0 + x_1 + x_2 + x_3
Subject To
 R0: - x_0 <= -1
 R1: - x_1 <= -1
 R2: - x_2 <= -1
 R3: - x_3 <= -1
Bounds
 x_0 free
 x_1 free
 x_2 free
 x_3 free
End
----------------------------------------
GUROBI
Minimize
  x[0,0] + x[0,1] + x[1,0] + x[1,1]
Subject To
 8[0,0]: x[0,0] >= 1
 8[0,1]: x[0,1] >= 1
 8[1,0]: x[1,0] >= 1
 8[1,1]: x[1,1] >= 1
Bounds
 x[0,0] free
 x[0,1] free
 x[1,0] free
 x[1,1] free
End