diff --git a/.github/scripts/prepare_installer.sh b/.github/scripts/prepare_installer.sh
index 79230fd9..ea10043f 100644
--- a/.github/scripts/prepare_installer.sh
+++ b/.github/scripts/prepare_installer.sh
@@ -42,6 +42,7 @@ if [ -z "$EXE_PATH" ]; then
 fi
 
 cp "$EXE_PATH" "$DEST_DIR_RELEASE/jbeam-edit.exe"
+du -h "$EXE_PATH"
 echo "Copied exe to /$DEST_DIR_RELEASE/jbeam-edit.exe"
 
 LSP_EXE_PATH=$(find "$DIST_NEWSTYLE/build" -type f -name "jbeam-lsp-server.exe" | head -n 1)
@@ -49,6 +50,7 @@ LSP_EXE_PATH=$(find "$DIST_NEWSTYLE/build" -type f -name "jbeam-lsp-server.exe"
 if [ -z "$LSP_EXE_PATH" ]; then
   echo "Error: No LSP exe found in '$DIST_NEWSTYLE/build', skipping."
 else
+  du -h "$LSP_EXE_PATH"
   cp "$LSP_EXE_PATH" "$DEST_DIR_RELEASE/jbeam-lsp-server.exe"
   echo "Copied exe to /$DEST_DIR_RELEASE/jbeam-lsp-server.exe"
 fi
diff --git a/cabal.project b/cabal.project
index 185175cb..35508581 100644
--- a/cabal.project
+++ b/cabal.project
@@ -1,6 +1,8 @@
 packages: .
 optimization: False
-tests: False
+
+package *
+  tests: False
 
 package jbeam-edit
   tests: False
diff --git a/cabal.project.ci b/cabal.project.ci
index 83d9959e..5183270b 100644
--- a/cabal.project.ci
+++ b/cabal.project.ci
@@ -1,9 +1,7 @@
 import: cabal.project
 test-show-details: direct
 
-program-options
-  ghc-options: -Werror
-
 package jbeam-edit
   tests: True
   flags: +dump-ast +transformation +lsp-server -windows-example-paths
+  ghc-options: -Werror
diff --git a/cabal.project.release b/cabal.project.release
index a5346ba0..ad8e20cb 100644
--- a/cabal.project.release
+++ b/cabal.project.release
@@ -1,5 +1,6 @@
 import: cabal.project
 executable-static: True
+executable-stripping: True
 index-state: hackage.haskell.org 2025-10-12T21:52:54Z
 
 package *
@@ -7,6 +8,10 @@ package *
     -threaded
     -rtsopts
     -with-rtsopts=-N
+    -split-sections
+    -optc-Os
+    -optl-static
+    -fignore-asserts
 
 package jbeam-edit
   tests: False
diff --git a/jbeam-edit.cabal b/jbeam-edit.cabal
index 20da3071..d7328deb 100644
--- a/jbeam-edit.cabal
+++ b/jbeam-edit.cabal
@@ -91,6 +91,7 @@ library
         -Wall -Wcompat -Widentities -Wincomplete-record-updates
         -Wincomplete-uni-patterns -Wmissing-export-lists
         -Wmissing-home-modules -Wpartial-fields -Wredundant-constraints
+        -Wunused-packages
 
     build-depends:
         base >=4.17 && <5,
@@ -135,7 +136,6 @@ library jbeam-edit-transformation
         directory,
         filepath,
         jbeam-edit,
-        megaparsec,
         mtl,
         scientific,
         text >=2.0,
@@ -177,7 +177,6 @@ library jbeam-language-server
         directory,
         filepath,
         jbeam-edit,
-        megaparsec,
         mtl,
         scientific,
         text >=2.0,
@@ -219,7 +218,6 @@ executable jbeam-edit
         directory,
         filepath,
         jbeam-edit,
-        megaparsec,
         mtl,
         scientific,
         text >=2.0,
@@ -252,7 +250,6 @@ executable jbeam-edit-dump-ast
         directory,
         filepath,
         jbeam-edit,
-        megaparsec,
         mtl,
         scientific,
         text >=2.0,
@@ -286,7 +283,6 @@ executable jbeam-lsp-server
         directory,
         filepath,
         jbeam-edit,
-        megaparsec,
         mtl,
         scientific,
         text >=2.0,
@@ -318,7 +314,6 @@ executable jbeam-lsp-test-server
         directory,
         filepath,
         jbeam-edit,
-        megaparsec,
         mtl,
         scientific,
         text >=2.0,
@@ -363,14 +358,15 @@ test-suite jbeam-edit-test
         filepath,
         hspec,
         jbeam-edit,
-        megaparsec,
         mtl,
         scientific,
         text >=2.0,
         vector
 
     if True
-        build-depends: hspec-megaparsec
+        build-depends:
+            hspec-megaparsec,
+            megaparsec
 
 test-suite jbeam-edit-transformation-test
     type:               exitcode-stdio-1.0
@@ -394,7 +390,6 @@ test-suite jbeam-edit-transformation-test
         filepath,
         hspec,
         jbeam-edit,
-        megaparsec,
         mtl,
         scientific,
         text >=2.0,
@@ -433,7 +428,6 @@ test-suite jbeam-language-server-test
         filepath,
         hspec,
         jbeam-edit,
-        megaparsec,
         mtl,
         scientific,
         text >=2.0,
diff --git a/package.yaml b/package.yaml
index f718d44c..f880456d 100644
--- a/package.yaml
+++ b/package.yaml
@@ -33,7 +33,6 @@ dependencies:
   - vector
   - text >= 2.0
   - containers
-  - megaparsec
   - scientific
   - directory
   - filepath
@@ -100,8 +99,10 @@ internal-libraries:
     <<: *jbeam-extra-lib
 
 library:
+  ghc-options: [-Wunused-packages]
   source-dirs: src
   generated-other-modules: Paths_jbeam_edit
+  dependencies: [megaparsec]
   when:
     - condition: flag(transformation)
       cpp-options: -DENABLE_TRANSFORMATION
@@ -161,7 +162,7 @@ tests:
     source-dirs: test
     when:
       - condition: true
-        dependencies: [hspec-megaparsec]
+        dependencies: [megaparsec, hspec-megaparsec]
   jbeam-language-server-test:
     <<: *jbeam-test-common
     source-dirs: test-extra/language-server