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#### Description of the problem
The following snippet works for Coq 8.10 and Coq 8.11 but does not work for Coq 8.12.
```coq
Require Import ssreflect.
(* this is a lighter version of the `…
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#### Description of the problem
We get the error `Unknown scope delimiting key ssripat` if we define a tactic in a context were ssreflect is imported, and try to use it in a context where it …
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The Ssreflect `have` construct fails in a somewhat unexpected way. The error message is
```
Error: Tactic failure: Incorrect number of goals (expected 1 tactic).
```
Note that adding a dum…
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#### Description of the problem
The ever abstraction and rewrite instantiation in SSreflect and `setoid_rewrite` behave erratically when dealing with evars with a local contexts (i.e., created …
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#### Version
8.7.2 (April 2018), 8.8.0 (May 2018), 8.8+alpha (June 2018)
#### Operating system
Linux
#### Description of the problem
I have a definition `ded : form -> Prop` and a def…
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Consider the following proof script:
```
From mathcomp Require Export ssreflect.
Class Decision (P : Prop) := decide : {P} + {~P}.
Arguments decide _ {_}.
Notation EqDecision A := (forall x y :…
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Hello,
in CoqEAL0.1, ` sorted_take` (from ssrcomplements.v) had no transitivity assumption. In CoqEAL1.0.5, such an assumption exists. It may turn out be a problem one day.
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#### Description of the problem
The SSReflect documentation says "If this head is a projection of a canonical structure, then canonical structure equations are used for the matching." in section "M…
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https://github.com/math-comp/math-comp/blob/082c28dc6562c3d947d52b74bd2a6bb592941562/mathcomp/ssreflect/order.v#L1265-L1266
It also seems to apply here: https://github.com/math-comp/math-comp/blob/08…
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Hello! I'd like to prove correctness of a few simple Michelson programs in Coq. Since the language specification has changed in the last two years, (i) which branch should I be working with? (ii) what…