drop support for Coq 8.16 and 8.17

.gitlab-ci.yml

@@ -67,24 +67,10 @@ build-coq.8.19.0-mr:
     DENY_WARNINGS: "1"
     MANGLE_NAMES: "1"
 
-build-coq.8.18.0:
-  <<: *template
-  variables:
-    OPAM_PINS: "coq version 8.18.0"
-    DENY_WARNINGS: "1"
-    MANGLE_NAMES: "1"
-
-build-coq.8.17.1:
-  <<: *template
-  variables:
-    OPAM_PINS: "coq version 8.17.1"
-    DENY_WARNINGS: "1"
-    MANGLE_NAMES: "1"
-
 # The oldest version runs in MRs, without name mangling.
-build-coq.8.16.1:
+build-coq.8.18.0:
   <<: *template
   <<: *branches_and_mr
   variables:
-    OPAM_PINS: "coq version 8.16.1"
+    OPAM_PINS: "coq version 8.18.0"
     DENY_WARNINGS: "1"

README.md

@@ -43,7 +43,7 @@ Notably:
 
 This version is known to compile with:
 
- - Coq version 8.16.1 / 8.17.1 / 8.18.0 / 8.19.0
+ - Coq version 8.18.0 / 8.19.0
 
 Generally we always aim to support the last two stable Coq releases. Support for
 older versions will be dropped when it is convenient.

coq-stdpp.opam

@@ -33,7 +33,7 @@ tags: [
 ]
 
 depends: [
-  "coq" { (>= "8.16" & < "8.20~") | (= "dev") }
+  "coq" { (>= "8.18" & < "8.20~") | (= "dev") }
 ]
 
 build: ["./make-package" "stdpp" "-j%{jobs}%"]