diff --git a/message-index/messages/GHC-45102/example1/.gitignore b/message-index/messages/GHC-45102/example1/.gitignore
new file mode 100644
index 00000000..6e8ed1bb
--- /dev/null
+++ b/message-index/messages/GHC-45102/example1/.gitignore
@@ -0,0 +1 @@
+**/dist-newstyle/*
\ No newline at end of file
diff --git a/message-index/messages/GHC-45102/example1/after/cabal.project b/message-index/messages/GHC-45102/example1/after/cabal.project
new file mode 100644
index 00000000..5da9073f
--- /dev/null
+++ b/message-index/messages/GHC-45102/example1/after/cabal.project
@@ -0,0 +1,3 @@
+packages: fruits/
+packages: vegatables/
+packages: salad/
\ No newline at end of file
diff --git a/message-index/messages/GHC-45102/example1/after/fruits/Tomatoes.hs b/message-index/messages/GHC-45102/example1/after/fruits/Tomatoes.hs
new file mode 100644
index 00000000..a4ccc374
--- /dev/null
+++ b/message-index/messages/GHC-45102/example1/after/fruits/Tomatoes.hs
@@ -0,0 +1 @@
+module Tomatoes where
diff --git a/message-index/messages/GHC-45102/example1/after/fruits/fruits.cabal b/message-index/messages/GHC-45102/example1/after/fruits/fruits.cabal
new file mode 100644
index 00000000..8b465734
--- /dev/null
+++ b/message-index/messages/GHC-45102/example1/after/fruits/fruits.cabal
@@ -0,0 +1,13 @@
+cabal-version:      3.0
+
+name:                fruits
+version:             0.0.1
+license:             MIT
+author:              Jappie
+maintainer:          hi@jappie.me
+build-type:          Simple
+
+library
+  exposed-modules:  Tomatoes
+  build-depends:       base
+  default-language:    Haskell2010
diff --git a/message-index/messages/GHC-45102/example1/after/salad/Salad.hs b/message-index/messages/GHC-45102/example1/after/salad/Salad.hs
new file mode 100644
index 00000000..08c4cb90
--- /dev/null
+++ b/message-index/messages/GHC-45102/example1/after/salad/Salad.hs
@@ -0,0 +1,5 @@
+{-# LANGUAGE PackageImports #-}
+
+module Salad where
+
+import "vegetables" Tomatoes
diff --git a/message-index/messages/GHC-45102/example1/after/salad/salad.cabal b/message-index/messages/GHC-45102/example1/after/salad/salad.cabal
new file mode 100644
index 00000000..e1e4c1dc
--- /dev/null
+++ b/message-index/messages/GHC-45102/example1/after/salad/salad.cabal
@@ -0,0 +1,13 @@
+cabal-version:      3.0
+
+name:                salad
+version:             0.0.1
+license:             MIT
+author:              Jappie
+maintainer:          hi@jappie.me
+build-type:          Simple
+
+library
+  exposed-modules:  Salad
+  build-depends:       base, fruits, vegetables
+  default-language:    Haskell2010
diff --git a/message-index/messages/GHC-45102/example1/after/vegatables/Tomatoes.hs b/message-index/messages/GHC-45102/example1/after/vegatables/Tomatoes.hs
new file mode 100644
index 00000000..a4ccc374
--- /dev/null
+++ b/message-index/messages/GHC-45102/example1/after/vegatables/Tomatoes.hs
@@ -0,0 +1 @@
+module Tomatoes where
diff --git a/message-index/messages/GHC-45102/example1/after/vegatables/vegetables.cabal b/message-index/messages/GHC-45102/example1/after/vegatables/vegetables.cabal
new file mode 100644
index 00000000..246b4199
--- /dev/null
+++ b/message-index/messages/GHC-45102/example1/after/vegatables/vegetables.cabal
@@ -0,0 +1,13 @@
+cabal-version:      3.0
+
+name:                vegetables
+version:             0.0.1
+license:             MIT
+author:              Jappie
+maintainer:          hi@jappie.me
+build-type:          Simple
+
+library
+  exposed-modules:  Tomatoes
+  build-depends:       base
+  default-language:    Haskell2010
diff --git a/message-index/messages/GHC-45102/example1/before/cabal.project b/message-index/messages/GHC-45102/example1/before/cabal.project
new file mode 100644
index 00000000..5da9073f
--- /dev/null
+++ b/message-index/messages/GHC-45102/example1/before/cabal.project
@@ -0,0 +1,3 @@
+packages: fruits/
+packages: vegatables/
+packages: salad/
\ No newline at end of file
diff --git a/message-index/messages/GHC-45102/example1/before/fruits/Tomatoes.hs b/message-index/messages/GHC-45102/example1/before/fruits/Tomatoes.hs
new file mode 100644
index 00000000..a4ccc374
--- /dev/null
+++ b/message-index/messages/GHC-45102/example1/before/fruits/Tomatoes.hs
@@ -0,0 +1 @@
+module Tomatoes where
diff --git a/message-index/messages/GHC-45102/example1/before/fruits/fruits.cabal b/message-index/messages/GHC-45102/example1/before/fruits/fruits.cabal
new file mode 100644
index 00000000..8b465734
--- /dev/null
+++ b/message-index/messages/GHC-45102/example1/before/fruits/fruits.cabal
@@ -0,0 +1,13 @@
+cabal-version:      3.0
+
+name:                fruits
+version:             0.0.1
+license:             MIT
+author:              Jappie
+maintainer:          hi@jappie.me
+build-type:          Simple
+
+library
+  exposed-modules:  Tomatoes
+  build-depends:       base
+  default-language:    Haskell2010
diff --git a/message-index/messages/GHC-45102/example1/before/salad/Salad.hs b/message-index/messages/GHC-45102/example1/before/salad/Salad.hs
new file mode 100644
index 00000000..5b4afdb1
--- /dev/null
+++ b/message-index/messages/GHC-45102/example1/before/salad/Salad.hs
@@ -0,0 +1,3 @@
+module Salad where
+
+import Tomatoes
diff --git a/message-index/messages/GHC-45102/example1/before/salad/salad.cabal b/message-index/messages/GHC-45102/example1/before/salad/salad.cabal
new file mode 100644
index 00000000..e1e4c1dc
--- /dev/null
+++ b/message-index/messages/GHC-45102/example1/before/salad/salad.cabal
@@ -0,0 +1,13 @@
+cabal-version:      3.0
+
+name:                salad
+version:             0.0.1
+license:             MIT
+author:              Jappie
+maintainer:          hi@jappie.me
+build-type:          Simple
+
+library
+  exposed-modules:  Salad
+  build-depends:       base, fruits, vegetables
+  default-language:    Haskell2010
diff --git a/message-index/messages/GHC-45102/example1/before/vegatables/Tomatoes.hs b/message-index/messages/GHC-45102/example1/before/vegatables/Tomatoes.hs
new file mode 100644
index 00000000..a4ccc374
--- /dev/null
+++ b/message-index/messages/GHC-45102/example1/before/vegatables/Tomatoes.hs
@@ -0,0 +1 @@
+module Tomatoes where
diff --git a/message-index/messages/GHC-45102/example1/before/vegatables/vegetables.cabal b/message-index/messages/GHC-45102/example1/before/vegatables/vegetables.cabal
new file mode 100644
index 00000000..246b4199
--- /dev/null
+++ b/message-index/messages/GHC-45102/example1/before/vegatables/vegetables.cabal
@@ -0,0 +1,13 @@
+cabal-version:      3.0
+
+name:                vegetables
+version:             0.0.1
+license:             MIT
+author:              Jappie
+maintainer:          hi@jappie.me
+build-type:          Simple
+
+library
+  exposed-modules:  Tomatoes
+  build-depends:       base
+  default-language:    Haskell2010
diff --git a/message-index/messages/GHC-45102/example1/index.md b/message-index/messages/GHC-45102/example1/index.md
new file mode 100644
index 00000000..b552a19a
--- /dev/null
+++ b/message-index/messages/GHC-45102/example1/index.md
@@ -0,0 +1,16 @@
+---
+title: Lambda syntax in `case` expression
+---
+
+When pattern matching with a `case` expression, backslash (`\`) is not required before the pattern.
+
+## Error Message
+
+```haskell
+LambdaInCase.hs:6:5: error: [GHC-00482]
+    Lambda-syntax in pattern.
+    Pattern matching on functions is not possible.
+  |
+6 |     \a -> a
+  |     ^^^^^^^
+```
diff --git a/message-index/messages/GHC-45102/index.md b/message-index/messages/GHC-45102/index.md
new file mode 100644
index 00000000..9f48d026
--- /dev/null
+++ b/message-index/messages/GHC-45102/index.md
@@ -0,0 +1,46 @@
+---
+title: Ambiguous module name from multiple packages
+summary: A module with the same name was exported from multiple packages
+severity: error
+introduced: 9.6.1
+---
+
+
+When two packages export a module of the same name, ghc doesn't know which you
+want to import.
+
+The solution is to use package import.
+
+So if we've two packages:
+
++ package fruits exports tomatoes:
+```haskell
+module Tomatoes where
+```
+
++ and package vegetables exports tomatoes:
+
+```haskell
+module Tomatoes where
+```
+
+then our package salad program will cause an error:
+
+```
+module Salad where
+import Tomatoes
+```
+
+The solution is to be specific with package imports: 
+
+```
+
+{-# LANGUAGE PackageImports #-}
+
+module Salad where
+
+import "vegetables" Tomatoes
+```
+
+alternatively you could patch the upstream libraries,
+but package imports is usually easiest.