···

       
17
       
17
       
 
       
assert useX11 -> safeX11 stdenv;

     

       
18
       
18
       
 
       
assert aflSupport -> lib.versionAtLeast version "4.05";

     

       
19
       
19
       
 
       
assert flambdaSupport -> lib.versionAtLeast version "4.03";

     

       
20
       
20
       
-
       
assert spaceTimeSupport -> lib.versionAtLeast version "4.04";

     

       
20
       
20
       
+
       
assert spaceTimeSupport -> lib.versionAtLeast version "4.04" && lib.versionOlder version "4.12";

     

       
21
       
21
       
 
       
assert unsafeStringSupport -> lib.versionAtLeast version "4.06" && lib.versionOlder version "5.0";

     

       
22
       
22
       
 
       


     

       
23
       
23
       
 
       
let