refactor the CI in scripts

.github/workflows/ci.yml

@@ -13,6 +13,7 @@ defaults:
 
 env:
   NU_LOG_LEVEL: DEBUG
+  CI_SCRIPTS: ".github/workflows/scripts"
 
 jobs:
   tests:
@@ -27,45 +28,10 @@ jobs:
       - uses: actions/checkout@v3
 
       - name: Set platform-specific variables
-        run: |
-          if [ "${{ runner.os }}" = "Linux" ]; then
-            echo "ARCH=x86_64-linux-gnu-full" >> $GITHUB_ENV
-            echo "EXT=tar.gz" >> $GITHUB_ENV
-            echo "NU_BIN=nu" >> $GITHUB_ENV
-            echo "NUPM=$HOME/nupm" >> $GITHUB_ENV
-          elif [ "${{ runner.os }}" = "Windows" ]; then
-            echo "ARCH=x86_64-pc-windows-msvc" >> $GITHUB_ENV
-            echo "EXT=zip" >> $GITHUB_ENV
-            echo "NU_BIN=nu.exe" >> $GITHUB_ENV
-            # NOTE: for some reason, `$HOME` gives an incorrect path on Windows, e.g. it looks like
-            # `/c/Users/runneradmin` where it should really be `c:\Users\runneradmin`: this commands
-            # changes the `/` into `\` and replaces the first part of the path with "x:\"
-            echo "NUPM=$(echo $HOME | tr '/' '\\' | sed 's/^\\\(.\)\\/\1:\\/')/nupm" >> $GITHUB_ENV
-          elif [ "${{ runner.os }}" = "macOS" ]; then
-            echo "ARCH=x86_64-apple-darwin" >> $GITHUB_ENV
-            echo "EXT=tar.gz" >> $GITHUB_ENV
-            echo "NU_BIN=nu" >> $GITHUB_ENV
-            echo "NUPM=$HOME/nupm" >> $GITHUB_ENV
-          fi
+        run: bash $CI_SCRIPTS/set-platform-specific-variables.sh "${{ runner.os }}" >> "$GITHUB_ENV"
 
       - name: Install Nushell from Nightly
-        run: |
-          tarball=$(\
-            curl -L https://api.github.com/repos/nushell/nightly/releases \
-                | jq 'sort_by(.published_at) | reverse | .[0].assets'\
-                | jq '.[] | select(.name | test("${{ env.ARCH }}.${{ env.EXT }}")) | {name, browser_download_url}'\
-            )
-          name=$(echo $tarball | jq '.name' | tr -d '"' | sed 's/.${{ env.EXT }}$//')
-          url=$(echo $tarball | jq '.browser_download_url' | tr -d '"')
-
-          curl -fLo $name $url
-
-          if [ "${{ env.EXT }}" = "tar.gz" ]; then
-            tar xvf $name --directory /tmp
-          elif [ "${{ env.EXT }}" = "zip" ]; then
-            unzip $name -d "/tmp/$name"
-          fi
-          cp "/tmp/$name/${{ env.NU_BIN }}" "$HOME/${{ env.NU_BIN }}"
+        run: bash $CI_SCRIPTS/install-nightly-nushell.sh "${{ env.ARCH }}" "${{ env.EXT }}" "${{ env.NU_BIN }}"
 
       - name: Install Nupm from Source
         run: git clone https://github.com/nushell/nupm "${{ env.NUPM }}"

.github/workflows/scripts/install-nightly-nushell.sh

@@ -0,0 +1,22 @@
+#!/usr/bin/env bash
+
+arch="$1"
+ext="$2"
+nu="$3"
+
+tarball=$(\
+    curl -L https://api.github.com/repos/nushell/nightly/releases \
+        | jq 'sort_by(.published_at) | reverse | .[0].assets'\
+        | jq ".[] | select(.name | test(\"$arch.$ext\")) | {name, browser_download_url}"\
+)
+name=$(echo $tarball | jq '.name' | tr -d '"' | sed "s/.$ext$//")
+url=$(echo $tarball | jq '.browser_download_url' | tr -d '"')
+
+curl -fLo $name $url
+
+if [ "$ext" = "tar.gz" ]; then
+    tar xvf $name --directory /tmp
+elif [ "$ext" = "zip" ]; then
+    unzip $name -d "/tmp/$name"
+fi
+cp "/tmp/$name/$nu" "$HOME/$nu"

.github/workflows/scripts/set-platform-specific-variables.sh

@@ -0,0 +1,35 @@
+#!/usr/bin/env bash
+
+os="$1"
+
+if [ "$os" = "Linux" ]; then
+    env=$(echo "
+        ARCH=x86_64-linux-gnu-full
+        EXT=tar.gz
+        NU_BIN=nu
+        NUPM=$HOME/nupm
+        CWD=$PWD
+    ")
+elif [ "$os" = "Windows" ]; then
+    env=$(echo "
+        ARCH=x86_64-pc-windows-msvc
+        EXT=zip
+        NU_BIN=nu.exe
+        NUPM=$(echo $HOME | tr '/' '\\' | sed 's/^\\\(.\)\\/\1:\\/')/nupm
+        CWD=$(echo $PWD | tr '/' '\\' | sed 's/^\\\(.\)\\/\1:\\/')
+    ")
+elif [ "$os" = "macOS" ]; then
+    env=$(echo "
+        ARCH=x86_64-apple-darwin
+        EXT=tar.gz
+        NU_BIN=nu
+        NUPM=$HOME/nupm
+        CWD=$PWD
+    ")
+else
+    echo "UNKNOWN OS \`$os\`"
+    exit 1
+fi
+
+echo $env | tr " " "\n"
+exit 0