diff --git a/.github/workflows/ghc.yml b/.github/workflows/ghc.yml
index bf3c72684..ebfbbb1aa 100644
--- a/.github/workflows/ghc.yml
+++ b/.github/workflows/ghc.yml
@@ -50,9 +50,11 @@ jobs:
           distribution: "zulu"
           java-version: 21
 
-      - run: npm install -g eolang@0.15.1
-
-      - run: ./pipeline.sh
+      - name: Install EO
+        run: npm install -g eolang@0.15.1
+      
+      - name: Run pipeline EO -> Phi -> Normalizer -> Phi -> EO
+        run: ./pipeline.sh
 
   haddock:
     needs: [build]
diff --git a/flake.nix b/flake.nix
index c63ea5751..5220dda72 100644
--- a/flake.nix
+++ b/flake.nix
@@ -145,10 +145,15 @@
           "${packageName}" = haskellPackages."${packageName}";
 
           pipeline = {
-            runtimeInputs = [ stack pkgs.jdk21 packages.eoc pkgs.maven ];
+            runtimeInputs = [
+              stack
+              pkgs.jdk21
+              packages.eoc
+              pkgs.maven
+              pkgs.perl
+            ];
             text = ''
-              JAVA_HOME="${pkgs.jdk21.home}"
-              export JAVA_HOME
+              export JAVA_HOME="${pkgs.jdk21.home}"
               ${builtins.readFile ./pipeline.sh}
             '';
             description = "Run pipeline";
diff --git a/pipeline.sh b/pipeline.sh
index 04ba4239d..c10e7546d 100755
--- a/pipeline.sh
+++ b/pipeline.sh
@@ -1,9 +1,11 @@
+set -euo pipefail
+
 mkdir -p pipeline
 cd pipeline
 
 shopt -s expand_aliases
 
-EO=0.34.2
+EO="0.34.3"
 alias eo="eoc --parser=${EO}"
 
 cat > app.eo <<EOT
@@ -24,7 +26,7 @@ I=".eoc/phi/app.bk.phi"
 mv "$IO" "$I"
 stack run normalize-phi < "$I" > "$IO" \
   || {
-    printf "\n\nNormalizer failed"
+    printf "\n\nNormalizer failed!"
     printf "\n\n* EO expression:\n\n"
     cat app.eo
     printf "\n\n* Phi expression:\n\n"
@@ -33,14 +35,17 @@ stack run normalize-phi < "$I" > "$IO" \
     cat "$IO"
     exit 1
   }
+perl -i -pe 'chomp if eof' "$IO"
 
-printf "\n\nNormalizer succeeded!\n\n"
+printf "\n\nNormalizer succeeded!"
+printf "\n\n* EO expression:\n\n"
+cat app.eo
 printf "\n\n* Phi expression:\n\n"
 cat "$I"
 printf "\n\n* Normalized Phi expression:\n\n"
 cat "$IO"
 printf "\n\n* Diff:\n\n"
-diff "$I" "$IO"
+diff "$I" "$IO" || true
 
 eo unphi