Fix the development container

.devcontainer/Dockerfile

@@ -4,15 +4,15 @@ FROM ubuntu:"$UBUNTU_TAG"
 ENV LANG=C.UTF-8
 RUN \
     apt-get update && \
-    apt-get install --assume-yes curl gcc git libgmp-dev make sudo
+    apt-get install --assume-yes curl gcc git libgmp-dev libtinfo-dev make sudo
 
-ARG GHCUP_VERSION=0.1.17.2
+ARG GHCUP_VERSION=0.1.17.3
 RUN \
     curl --output /usr/local/bin/ghcup "https://downloads.haskell.org/~ghcup/$GHCUP_VERSION/x86_64-linux-ghcup-$GHCUP_VERSION" && \
     chmod +x /usr/local/bin/ghcup && \
     ghcup --version
 
-ARG USER_NAME=me
+ARG USER_NAME=haskell
 RUN \
     useradd --create-home --shell "$( which bash )" "$USER_NAME" && \
     echo "$USER_NAME ALL=(ALL) NOPASSWD: ALL" | tee "/etc/sudoers.d/$USER_NAME"

.vscode/extensions.json

@@ -0,0 +1,5 @@
+{
+    "recommendations": [
+        "haskell.haskell"
+    ]
+}

cabal.project

@@ -0,0 +1,12 @@
+packages: .
+
+allow-newer:
+    , butcher:base
+    , data-tree-print:base
+    , multistate:base
+
+-- https://github.com/lspitzner/czipwith/pull/2
+source-repository-package
+    type: git
+    location: https://github.com/mithrandi/czipwith
+    tag: b6245884ae83e00dd2b5261762549b37390179f8