error: 'nonexistent' is not a variant of 'Platform' (variants are: ios, android_apk)
  --> examples/1169-diagnostics-enum-literal-bad-target.sx:10:20
   |
10 |     a : Platform = .nonexistent;   // unknown variant: lists the real ones
   |                    ^^^^^^^^^^^^

error: enum literal '.foo' cannot type itself from non-enum destination 'i64'
  --> examples/1169-diagnostics-enum-literal-bad-target.sx:11:15
   |
11 |     b : i64 = .foo;                // non-enum destination
   |               ^^^^