drop support for Coq 8.8 and 8.9

.gitlab-ci.yml

@@ -53,13 +53,3 @@ build-coq.8.10.2:
   <<: *template
   variables:
     OPAM_PINS: "coq version 8.10.2"
-
-build-coq.8.9.1:
-  <<: *template
-  variables:
-    OPAM_PINS: "coq version 8.9.1"
-
-build-coq.8.8.2:
-  <<: *template
-  variables:
-    OPAM_PINS: "coq version 8.8.2"

CHANGELOG.md

@@ -3,6 +3,8 @@ API-breaking change is listed.
 
 ## std++ master
 
+Coq 8.8 and 8.9 are no longer supported.
+
 - Rename `dom_map filter` → `dom_filter`, `dom_map_filter_L` → `dom_filter_L`,
   and `dom_map_filter_subseteq` → `dom_filter_subseteq` for consistency's sake.
 - Add `max` and `min` operations for `Qp`.

README.md

@@ -45,7 +45,7 @@ Notably:
 
 This version is known to compile with:
 
- - Coq version 8.8.2 / 8.9.1 / 8.10.2 / 8.11.2 / 8.12.0
+ - Coq version 8.10.2 / 8.11.2 / 8.12.0
 
 ## Installing via opam
 

opam

@@ -30,7 +30,7 @@ The key features of this library are as follows:
 """
 
 depends: [
-  "coq" { (= "8.8.2") | (>= "8.9.1" & < "8.13~") | (= "dev") }
+  "coq" { (>= "8.10.2" & < "8.13~") | (= "dev") }
 ]
 
 build: [make "-j%{jobs}%"]

theories/options.v

@@ -6,8 +6,7 @@ but not transitively. *)
 Export Set Default Proof Using "Type".
 (* FIXME: cannot enable this yet as some files disable 'Default Proof Using'.
 Export Set Suggest Proof Using. *)
-(* FIXME: cannot enable this on Coq 8.8.
-Export Set Default Goal Selector "!". *)
+Export Set Default Goal Selector "!".
 
 (* "Fake" import to whitelist this file for the check that ensures we import
 this file everywhere.