[FIX] Optim with O2

bin/install

@@ -2,7 +2,7 @@
 
 echo "GarganText, build, install, test and documentation"
 nix-shell --run "cabal update                                     \\
-                 && cabal v2-build                                \\
+                 && cabal v2-build --ghc-options=-O2              \\
                  && cabal --overwrite-policy=always install       \\
                  && cabal v2-test --test-show-details=streaming   \\
                  && cabal haddock"

gargantext.cabal

@@ -64,7 +64,7 @@ common defaults
   build-depends:
     base >=4.7 && <5
 
--- optimizations
+  optimization: 2
 common optimized
   ghc-options:
     -O2
@@ -812,6 +812,7 @@ executable gargantext-server
     , text ^>= 1.2.4.1
     , unordered-containers ^>= 0.2.16.0
     , vector ^>= 0.7.3
+  optimization: 2
 
 executable gargantext-upgrade
   import: