-- in.cue --
import "list"

issue563: {
	#MyDef: {
		name: string
		...
	}

	_all: [
		_a,
		_b,
	]

	_a: [...#MyDef] & [
		{name: "a"},
		{name: "b"},
		{name: "c"},
	]

	_b: [...#MyDef] & [
		{name: "1"},
		{name: "2"},
		{name: "3"},
	]

	output: [...#MyDef] & list.FlattenN(_all, 1)
}
issue1404: {
	a:   *1 | 2
	sum: list.Sum([a])
}
issue3541: {
	_test: {
		one: {
			num: 2
			test: num: 6
		}
		two: {
			num: 3
			test: num: 7
		}
		three: {
			num: 4
			test: num: 8
		}
		four: {
			num: 5
			test: num: 9
		}
	}

	list.Sum([for key, val in _test {
		val.num + val.test
	}])
}

issue2594: sumFirst: {
	#Def: {
		number & list.Sum(#In)
		#In: [...number]
	}

	x!: 6
	x:  #Def & {_
		#In: [1, 2, 3]
	}
}
issue2594: sumSecond: {
	#Def: {
		#In: [...number]
		number & list.Sum(#In)
	}

	x!: 6
	x:  #Def & {_
		#In: [1, 2, 3]
	}
}

issue3416: sumFirst: {
	a: b: {_, _c: x: 100}
	a: b: {
		list.Sum([for _, v in _c {v}])
		_c: {
			y: 1
			z: 10
		}
	}
}
issue3416: sumSecond: {
	a: b: {_, _c: x: 100}
	a: b: {
		_c: {
			y: 1
			z: 10
		}
		list.Sum([for _, v in _c {v}])
	}
}
-- out/list-v3 --
Errors:
issue3541: error in call to list.Sum: invalid operands 2 and {num:6} to '+' (type int and struct):
    ./in.cue:52:2
    ./in.cue:35:9
    ./in.cue:36:10
    ./in.cue:53:3

Result:
issue563: {
	#MyDef: {
		name: string
	}
	output: [{
		name: "a"
	}, {
		name: "b"
	}, {
		name: "c"
	}, {
		name: "1"
	}, {
		name: "2"
	}, {
		name: "3"
	}]
}
issue1404: {
	a:   *1 | 2
	sum: 1
}
issue3541: _|_ // issue3541: error in call to list.Sum: 0: invalid operands 2 and {num:6} to '+' (type int and struct)
issue2594: {
	sumFirst: {
		#Def: {
			0
			#In: [...number]
		}
		x: {
			6
			#In: [1, 2, 3]
		}
	}
	sumSecond: {
		#Def: {
			0
			#In: [...number]
		}
		x: {
			6
			#In: [1, 2, 3]
		}
	}
}
issue3416: {
	sumFirst: {
		a: {
			b: {
				111
			}
		}
	}
	sumSecond: {
		a: {
			b: {
				111
			}
		}
	}
}
-- diff/-out/list-v3<==>+out/list --
diff old new
--- old
+++ new
@@ -1,11 +1,9 @@
 Errors:
-issue2594.sumSecond.x: conflicting values 0 and 6:
-    ./in.cue:71:3
-    ./in.cue:71:12
-    ./in.cue:74:6
-    ./in.cue:75:6
-issue3416.sumFirst.a.b: field y not allowed by earlier comprehension or reference cycle
-issue3416.sumFirst.a.b: field z not allowed by earlier comprehension or reference cycle
+issue3541: error in call to list.Sum: invalid operands 2 and {num:6} to '+' (type int and struct):
+    ./in.cue:52:2
+    ./in.cue:35:9
+    ./in.cue:36:10
+    ./in.cue:53:3
 
 Result:
 issue563: {
@@ -30,7 +28,7 @@
 	a:   *1 | 2
 	sum: 1
 }
-issue3541: {}
+issue3541: _|_ // issue3541: error in call to list.Sum: 0: invalid operands 2 and {num:6} to '+' (type int and struct)
 issue2594: {
 	sumFirst: {
 		#Def: {
@@ -47,13 +45,18 @@
 			0
 			#In: [...number]
 		}
-		x: _|_ // issue2594.sumSecond.x: conflicting values 0 and 6
+		x: {
+			6
+			#In: [1, 2, 3]
+		}
 	}
 }
 issue3416: {
 	sumFirst: {
 		a: {
-			b: _|_ // issue3416.sumFirst.a.b: field y not allowed by earlier comprehension or reference cycle (and 1 more errors)
+			b: {
+				111
+			}
 		}
 	}
 	sumSecond: {
-- diff/explanation --
issue3541: evalv3 correctly spots an invalid operand error which evalv2 drops on the floor.
issue2594: evalv3 fixes an ordering issue present in evalv2.
-- out/list --
Errors:
issue2594.sumSecond.x: conflicting values 0 and 6:
    ./in.cue:71:3
    ./in.cue:71:12
    ./in.cue:74:6
    ./in.cue:75:6
issue3416.sumFirst.a.b: field y not allowed by earlier comprehension or reference cycle
issue3416.sumFirst.a.b: field z not allowed by earlier comprehension or reference cycle

Result:
issue563: {
	#MyDef: {
		name: string
	}
	output: [{
		name: "a"
	}, {
		name: "b"
	}, {
		name: "c"
	}, {
		name: "1"
	}, {
		name: "2"
	}, {
		name: "3"
	}]
}
issue1404: {
	a:   *1 | 2
	sum: 1
}
issue3541: {}
issue2594: {
	sumFirst: {
		#Def: {
			0
			#In: [...number]
		}
		x: {
			6
			#In: [1, 2, 3]
		}
	}
	sumSecond: {
		#Def: {
			0
			#In: [...number]
		}
		x: _|_ // issue2594.sumSecond.x: conflicting values 0 and 6
	}
}
issue3416: {
	sumFirst: {
		a: {
			b: _|_ // issue3416.sumFirst.a.b: field y not allowed by earlier comprehension or reference cycle (and 1 more errors)
		}
	}
	sumSecond: {
		a: {
			b: {
				111
			}
		}
	}
}