Update nix/frama-ci.*

src/plugins/e-acsl/nix/frama-ci.nix

@@ -5,8 +5,8 @@ let
     src = builtins.fetchGit {
             "url" = "https://bobot:${password}@git.frama-c.com/frama-c/Frama-CI.git";
             "name" = "Frama-CI";
-            "rev" = "70045f4252e668e0facad12d7db2c6ab83fc813b";
-            "ref" = "master";
+            "rev" = "f7d5e96afa5b540feb4476b732e78dc8424bd10f";
+            "ref" = "feature/opam2";
     };
  in
  {

src/plugins/e-acsl/nix/frama-ci.sh

@@ -4,7 +4,7 @@ DIR=$(dirname $0)
 
 export FRAMA_CI_NIX=$DIR/frama-ci.nix
 
-export FRAMA_CI=$(nix-instantiate --eval -E "((import <nixpkgs> {}).callPackage $FRAMA_CI_NIX  { password = \"$TOKEN_FOR_API\";}).src.outPath")
+export FRAMA_CI=$(nix-instantiate --eval -E "((import <nixos-19.03> {}).callPackage $FRAMA_CI_NIX  { password = \"$TOKEN_FOR_API\";}).src.outPath")
 
 FRAMA_CI=${FRAMA_CI#\"}
 FRAMA_CI=${FRAMA_CI%\"}