fix nix and CI for coq-master

.nix/config.nix

@@ -57,7 +57,7 @@
   };
   bundles."master".coqPackages = {
     coq.override.version = "master";
-    coq-elpi.override.version = "coq-master";
+    coq-elpi.override.version = "master";
     hierarchy-builder.override.version = "master";
     mathcomp.override.version = "master";
   };

.nix/coq-overlays/coq-elpi/default.nix

@@ -0,0 +1,85 @@
+{ lib, mkCoqDerivation, which, coq, version ? null }:
+
+let
+  elpi = coq.ocamlPackages.elpi.override (lib.switch coq.coq-version [
+    { case = "8.11"; out = { version = "1.11.4"; };}
+    { case = "8.12"; out = { version = "1.12.0"; };}
+    { case = "8.13"; out = { version = "1.13.7"; };}
+    { case = "8.14"; out = { version = "1.13.7"; };}
+    { case = "8.15"; out = { version = "1.15.0"; };}
+    { case = "8.16"; out = { version = "1.17.0"; };}
+    { case = "8.17"; out = { version = "1.17.0"; };}
+    { case = "8.18"; out = { version = "1.18.1"; };}
+    { case = "8.20"; out = { version = "1.19.2"; };}
+  ] { version = "v1.19.4"; } );
+in (mkCoqDerivation {
+  pname = "elpi";
+  repo  = "coq-elpi";
+  owner = "LPCIC";
+  inherit version;
+  defaultVersion = lib.switch coq.coq-version [
+    { case = "8.20"; out = "2.2.0"; }
+    { case = "8.19"; out = "2.0.1"; }
+    { case = "8.18"; out = "2.0.0"; }
+    { case = "8.17"; out = "1.18.0"; }
+    { case = "8.16"; out = "1.15.6"; }
+    { case = "8.15"; out = "1.14.0"; }
+    { case = "8.14"; out = "1.11.2"; }
+    { case = "8.13"; out = "1.11.1"; }
+    { case = "8.12"; out = "1.8.3_8.12"; }
+    { case = "8.11"; out = "1.6.3_8.11"; }
+  ] null;
+  release."2.2.0".sha256      = "sha256-rADEoqTXM7/TyYkUKsmCFfj6fjpWdnZEOK++5oLfC/I=";
+  release."2.0.1".sha256      = "sha256-cuoPsEJ+JRLVc9Golt2rJj4P7lKltTrrmQijjoViooc=";
+  release."2.0.0".sha256      = "sha256-A/cH324M21k3SZ7+YWXtaYEbu6dZQq3K0cb1RMKjbsM=";
+  release."1.19.0".sha256     = "sha256-kGoo61nJxeG/BqV+iQaV3iinwPStND+7+fYMxFkiKrQ=";
+  release."1.18.0".sha256     = "sha256-2fCOlhqi4YkiL5n8SYHuc3pLH+DArf9zuMH7IhpBc2Y=";
+  release."1.17.0".sha256     = "sha256-J8GatRKFU0ekNCG3V5dBI+FXypeHcLgC5QJYGYzFiEM=";
+  release."1.15.6".sha256     = "sha256-qc0q01tW8NVm83801HHOBHe/7H1/F2WGDbKO6nCXfno=";
+  release."1.15.1".sha256     = "sha256-NT2RlcIsFB9AvBhMxil4ZZIgx+KusMqDflj2HgQxsZg=";
+  release."1.14.0".sha256     = "sha256:1v2p5dlpviwzky2i14cj7gcgf8cr0j54bdm9fl5iz1ckx60j6nvp";
+  release."1.13.0".sha256     = "1j7s7dlnjbw222gnbrsjgmjck1yrx7h6hwm8zikcyxi0zys17w7n";
+  release."1.12.1".sha256     = "sha256-4mO6/co7NcIQSGIQJyoO8lNWXr6dqz+bIYPO/G0cPkY=";
+  release."1.11.2".sha256     = "0qk5cfh15y2zrja7267629dybd3irvxk1raz7z8qfir25a81ckd4";
+  release."1.11.1".sha256     = "10j076vc2hdcbm15m6s7b6xdzibgfcbzlkgjnlkr2vv9k13qf8kc";
+  release."1.10.1".sha256     = "1zsyx26dvj7pznfd2msl2w7zbw51q1nsdw0bdvdha6dga7ijf7xk";
+  release."1.9.7".sha256      = "0rvn12h9dpk9s4pxy32p8j0a1h7ib7kg98iv1cbrdg25y5vs85n1";
+  release."1.9.5".sha256      = "0gjdwmb6bvb5gh0a6ra48bz5fb3pr5kpxijb7a8mfydvar5i9qr6";
+  release."1.9.4".sha256      = "0nii7238mya74f9g6147qmpg6gv6ic9b54x5v85nb6q60d9jh0jq";
+  release."1.9.3".sha256      = "198irm800fx3n8n56vx1c6f626cizp1d7jfkrc6ba4iqhb62ma0z";
+  release."1.9.2".sha256      = "1rr2fr8vjkc0is7vh1461aidz2iwkigdkp6bqss4hhv0c3ijnn07";
+  release."1.8.3_8.12".sha256  = "15z2l4zy0qpw0ws7bvsmpmyv543aqghrfnl48nlwzn9q0v89p557";
+  release."1.8.3_8.12".version = "1.8.3";
+  release."1.8.2_8.12".sha256  = "1n6jwcdazvjgj8vsv2r9zgwpw5yqr5a1ndc2pwhmhqfl04b5dk4y";
+  release."1.8.2_8.12".version = "1.8.2";
+  release."1.8.1".sha256      = "1fbbdccdmr8g4wwpihzp4r2xacynjznf817lhijw6kqfav75zd0r";
+  release."1.8.0".sha256      = "13ywjg94zkbki22hx7s4gfm9rr87r4ghsgan23xyl3l9z8q0idd1";
+  release."1.7.0".sha256      = "1ws5cqr0xawv69prgygbl3q6dgglbaw0vc397h9flh90kxaqgyh8";
+  release."1.6.3_8.11".sha256 = "1j340cr2bv95clzzkkfmsjkklham1mj84cmiyprzwv20q89zr1hp";
+  release."1.6.3_8.11".version = "1.6.3";
+  release."1.6.2_8.11".sha256 = "06xrx0ljilwp63ik2sxxr7h617dgbch042xfcnfpy5x96br147rn";
+  release."1.6.2_8.11".version = "1.6.2";
+  release."1.6.1_8.11".sha256 = "0yyyh35i1nb3pg4hw7cak15kj4y6y9l84nwar9k1ifdsagh5zq53";
+  release."1.6.1_8.11".version = "1.6.1";
+  release."1.6.0_8.11".sha256 = "0ahxjnzmd7kl3gl38kyjqzkfgllncr2ybnw8bvgrc6iddgga7bpq";
+  release."1.6.0_8.11".version = "1.6.0";
+  release."1.6.0".sha256      = "0kf99i43mlf750fr7fric764mm495a53mg5kahnbp6zcjcxxrm0b";
+  releaseRev = v: "v${v}";
+
+  buildFlags = [ "OCAMLWARN=" ];
+
+  mlPlugin = true;
+  useDuneifVersion = v: lib.versions.isGe "2.2.0" v || v == "dev";
+  propagatedBuildInputs = [ coq.ocamlPackages.findlib elpi ];
+
+  meta = {
+    description = "Coq plugin embedding ELPI";
+    maintainers = [ lib.maintainers.cohencyril ];
+    license = lib.licenses.lgpl21Plus;
+  };
+}).overrideAttrs (o:
+  lib.optionalAttrs (o.version != null
+    && (o.version == "dev" || lib.versions.isGe "2.2.0" o.version))
+  {
+    propagatedBuildInputs = o.propagatedBuildInputs ++ [ coq.ocamlPackages.ppx_optcomp ];
+  })