CVXPY
Maximize
  x
Subject To
 12: norm1(x) <= 1.0
Bounds
 x free
End
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AFTER COMPILATION
Minimize
 Obj: -1 x_0
Subject to
 c1: +1 x_0 -1 x_1 <= +0
 c2: -1 x_0 -1 x_1 <= +0
 c3: +1 x_1 <= +1
Bounds
 x_0 free
 x_1 free
End
----------------------------------------
SCIP
Maximize
 Obj: +1 x
Subject to
\   [nonlinear] <12>: abs((<x>)) <= 1;
Bounds
 x free
End