push sheeet

pkgs/development/tools/minizinc/simple-test/aust.mzn

@@ -0,0 +1,20 @@
+% Taken from https://www.minizinc.org/doc-2.7.3/en/modelling.html
+int: nc = 3;
+
+var 1..nc: wa;   var 1..nc: nt;  var 1..nc: sa;   var 1..nc: q;
+var 1..nc: nsw;  var 1..nc: v;   var 1..nc: t;
+
+constraint wa != nt;
+constraint wa != sa;
+constraint nt != sa;
+constraint nt != q;
+constraint sa != q;
+constraint sa != nsw;
+constraint sa != v;
+constraint q != nsw;
+constraint nsw != v;
+solve satisfy;
+
+output ["wa=\(wa)\t nt=\(nt)\t sa=\(sa)\n",
+        "q=\(q)\t nsw=\(nsw)\t v=\(v)\n",
+         "t=", show(t),  "\n"];

pkgs/development/tools/minizinc/simple-test/default.nix

@@ -0,0 +1,22 @@
+# These tests show that the minizinc build is capable of running the
+# examples in the official tutorial:
+# https://www.minizinc.org/doc-2.7.3/en/modelling.html
+
+{ stdenv, minizinc }:
+
+stdenv.mkDerivation {
+  name = "minizinc-simple-test";
+
+  nativeBuildInputs = [ minizinc ];
+
+  dontInstall = true;
+
+  buildCommand = ''
+    mkdir -p $out
+    minizinc --solver gecode ${./aust.mzn} | tee $out/aust.log
+    minizinc --solver gecode ${./nqueens.mzn} | tee $out/nqueens.log
+    minizinc --solver cbc ${./loan.mzn} ${./loan1.dzn} | tee $out/loan.log
+  '';
+
+  meta.timeout = 10;
+}

pkgs/development/tools/minizinc/simple-test/loan.mzn

@@ -0,0 +1,24 @@
+% Taken from https://www.minizinc.org/doc-2.7.3/en/modelling.html
+% variables
+var float: R;        % quarterly repayment
+var float: P;        % principal initially borrowed
+var 0.0 .. 10.0: I;  % interest rate (per quarter)
+
+% intermediate variables
+var float: B1; % balance after one quarter
+var float: B2; % balance after two quarters
+var float: B3; % balance after three quarters
+var float: B4; % balance owing at end
+
+constraint B1 = P * (1.0 + I) - R;
+constraint B2 = B1 * (1.0 + I) - R;
+constraint B3 = B2 * (1.0 + I) - R;
+constraint B4 = B3 * (1.0 + I) - R;
+
+solve satisfy;
+
+output [
+ "Borrowing ", show_float(0, 2, P), " at ", show(I*100.0),
+ "% interest, and repaying ", show_float(0, 2, R),
+  "\nper quarter for 1 year leaves ", show_float(0, 2, B4), " owing\n"
+];

pkgs/development/tools/minizinc/simple-test/loan1.dzn

@@ -0,0 +1,3 @@
+I = 0.04;
+P = 1000.0;
+R = 260.0;

pkgs/development/tools/minizinc/simple-test/nqueens.mzn

@@ -0,0 +1,9 @@
+int: n = 8; % The number of queens.
+
+array [1..n] of var 1..n: q;
+
+include "alldifferent.mzn";
+
+constraint alldifferent(q);
+constraint alldifferent(i in 1..n)(q[i] + i);
+constraint alldifferent(i in 1..n)(q[i] - i);