326048df54
see discussion at: https://groups.google.com/forum/#!topic/lean-discuss/oyzgIqdMyNc
34 lines
1 KiB
Text
34 lines
1 KiB
Text
cases_failure.hlean:11:2: error:invalid 'cases' tactic, unification failed
|
|
auxiliary goal at time of failure
|
|
A : Type,
|
|
z : A,
|
|
b r t l : z = z,
|
|
s : square t b l r,
|
|
e_3 : z = z
|
|
⊢ Π (e_4 : eq.rec t (refl z) = idp) (e_5 : eq.rec (eq.rec b (refl z)) e_3 = idp) (e_6 : eq.rec l (refl z) = idp)
|
|
(e_7 : eq.rec (eq.rec r (refl z)) e_3 = idp),
|
|
eq.rec (eq.rec (eq.rec (eq.rec (eq.rec (eq.rec (eq.rec s (refl z)) (refl z)) e_3) e_4) e_5) e_6)
|
|
e_7 = square.ids →
|
|
unit
|
|
proof state:
|
|
A : Type,
|
|
x y z : A,
|
|
t : x = y,
|
|
b : z = y,
|
|
l : x = z,
|
|
r : y = y,
|
|
s : square t b l r
|
|
⊢ unit
|
|
cases_failure.hlean:13:0: error: don't know how to synthesize placeholder
|
|
A : Type,
|
|
x y z : A,
|
|
t : x = y,
|
|
b : z = y,
|
|
l : x = z,
|
|
r : y = y,
|
|
s : square t b l r
|
|
⊢ unit
|
|
cases_failure.hlean:13:0: error: failed to add declaration 'foo' to environment, value has metavariables
|
|
remark: set 'formatter.hide_full_terms' to false to see the complete term
|
|
λ (A : Type) (x y z : A) (t : …) (b : …) (l : …) (r : …) (s : …),
|
|
?M_1
|