From 3d65a8168c80fcf36b8f41b290f915f5b60ac11f Mon Sep 17 00:00:00 2001
From: Matthijs Blom <19817960+MatthijsBlom@users.noreply.github.com>
Date: Sun, 30 Jul 2023 14:12:02 +0200
Subject: [PATCH 1/2] Remove outdated warning

---
 docs/TESTS.md | 8 --------
 1 file changed, 8 deletions(-)

diff --git a/docs/TESTS.md b/docs/TESTS.md
index 388e4d1fa..2947ab73a 100644
--- a/docs/TESTS.md
+++ b/docs/TESTS.md
@@ -84,14 +84,6 @@ library:
     - bar
 ```
 
-Then, when submitting your solution, remember to submit `package.yaml` as
-well (otherwise the solution will fail). From the project's top-level
-directory run:
-
-```bash
-exercism submit package.yaml src/ModuleName.hs
-```
-
 ### Running *GHCi*
 
 If you want to play with your solution in GHCi, just run the command:

From d07c09cd39f0628dfbece1738352b8612d14cf9f Mon Sep 17 00:00:00 2001
From: Matthijs Blom <19817960+MatthijsBlom@users.noreply.github.com>
Date: Sun, 30 Jul 2023 14:14:00 +0200
Subject: [PATCH 2/2] Document available packages

---
 docs/TESTS.md | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/docs/TESTS.md b/docs/TESTS.md
index 2947ab73a..97d1feb2c 100644
--- a/docs/TESTS.md
+++ b/docs/TESTS.md
@@ -84,6 +84,26 @@ library:
     - bar
 ```
 
+While working locally, you can use any packages you like.
+The online test runner, however, has access to only a limited set of packages.
+The available packages are
+
+- the ones that come pre-installed with GHC (most notably `base`,  `containers`,  `array`,  `time`,  `mtl`, `deepseq`,  `exceptions`, `bytestring`), plus
+- those pre-built for the test runner, listed at [haskell-test-runner/pre-compiled/package.yaml](https://github.com/exercism/haskell-test-runner/blob/main/pre-compiled/package.yaml).
+
+If you submit a solution that uses a package that is not available, then the test runner will run into its lack of internet access and produce an error that looks like this:
+
+```text
+Cabal file info not found for unavailable-package-1.0@..., updating
+Selected mirror https://hackage.haskell.org/
+Downloading root
+HttpExceptionRequest Request {
+  host                 = "hackage.haskell.org"
+  ...
+}
+ (ConnectionFailure ...)
+```
+
 ### Running *GHCi*
 
 If you want to play with your solution in GHCi, just run the command: