From 7f8f57f9539a61a4f0bd04d4e8d82ac7063faee6 Mon Sep 17 00:00:00 2001
From: Daniel Harvey <danieljamesharvey@gmail.com>
Date: Sat, 16 Dec 2023 22:52:05 +0000
Subject: [PATCH] Readme

---
 README.md | 50 +++++++++++++++++++++++++++++++++++++++++++++++++-
 flake.nix |  2 +-
 2 files changed, 50 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index f3a4feea..b8e808b0 100644
--- a/README.md
+++ b/README.md
@@ -2,4 +2,52 @@
 
 Like [llvm-calc](https://github.com/danieljharvey/llvm-calc), but adapting it for learning WASM.
 
-https://github.com/danieljharvey/llvm-calc
+Each directory slowly adds features to a calculator that compiles to WASM.
+
+## wasm-calc
+
+Simple numerical expressions
+
+`1 + 2 + 3 * 3`
+
+## wasm-calc2
+
+Basic if expressions
+
+`if 1 == 2 then 7 else 8`
+
+## wasm-calc3
+
+Simple functions
+
+```
+function sum(a: Integer, b: Integer) {
+    a + b
+}
+
+sum(1,2)
+```
+
+## wasm-calc4
+
+Simple compound types (tuples).
+
+```
+function swapPair(pair: (Integer, Boolean)) {
+  (pair.2, pair.1)
+}
+
+if swapPair((100,True)).1 then 7 else 8
+```
+
+## wasm-calc5
+
+Floats, use different WASM types
+
+```
+function sumPair(pair: (Float,Float)) {
+  pair.1 + pair.2
+}
+
+sumPair((100.0,200.0))
+```
diff --git a/flake.nix b/flake.nix
index 857504d5..56978913 100644
--- a/flake.nix
+++ b/flake.nix
@@ -58,7 +58,7 @@
           buildInputs = with haskellPackages; [
             hlint
             ormolu
-            # haskell-language-server # this simply does nothing atm
+            haskell-language-server
             ghcid
             cabal-fmt
             cabal-install