Make the project a simple library (#1)

Earlier versions of that code in the Scala CLI build relied on Mill tasks
working directory, but it doesn't any more, so we don't need to use the
Mill task system here

.github/workflows/ci.yml

@@ -1,5 +1,3 @@
-# originally based on https://github.com/alexarchambault/mill-native-image/blob/dca83cef17f1a90360b62610e1dcce57271ef37d/.github/workflows/ci.yml
-
 name: CI
 on:
   push:
@@ -21,11 +19,12 @@ jobs:
     - uses: coursier/setup-action@v1
       with:
         jvm: 8
+        apps: "scala-cli"
     - name: Test
-      run: ./mill __.test
+      run: scala-cli --power test . --cross
 
   publish:
-    if: github.event_name == 'push' && github.repository == 'coursier/mill-cs'
+    if: github.event_name == 'push' && github.repository == 'coursier/get-cs'
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v3
@@ -36,12 +35,14 @@ jobs:
     - uses: coursier/setup-action@v1
       with:
         jvm: 8
+        apps: "scala-cli"
     - run: .github/scripts/gpg-setup.sh
       env:
-        PGP_SECRET: ${{ secrets.PUBLISH_SECRET_KEY }}
+        PUBLISH_SECRET_KEY: ${{ secrets.PUBLISH_SECRET_KEY }}
     - name: Release
-      run: ./mill publishSonatype __.publishArtifacts
+      run: scala-cli --power publish . --cross
       env:
-        PGP_PASSPHRASE: ${{ secrets.PUBLISH_SECRET_KEY_PASSWORD }}
-        SONATYPE_PASSWORD: ${{ secrets.PUBLISH_PASSWORD }}
-        SONATYPE_USERNAME: ${{ secrets.PUBLISH_USER }}
+        PUBLISH_SECRET_KEY: ${{ secrets.PUBLISH_SECRET_KEY }}
+        PUBLISH_SECRET_KEY_PASSWORD: ${{ secrets.PUBLISH_SECRET_KEY_PASSWORD }}
+        PUBLISH_USER: ${{ secrets.PUBLISH_USER }}
+        PUBLISH_PASSWORD: ${{ secrets.PUBLISH_PASSWORD }}

.gitignore

@@ -1,4 +1,4 @@
-out/
+.scala-build/
 .bsp/
 .metals/
 .vscode/

README.md

@@ -1,21 +1,18 @@
-# mill-cs
+# get-cs
 
-A Mill plugin to fetch a [coursier](https://github.com/coursier/coursier) from Mill
+A library to fetch a [coursier](https://github.com/coursier/coursier) from Scala code
 
-This plugin fetches native coursier launcher, depending on your OS (Linux / macOS /
+This library fetches a native coursier launcher, depending on your OS (Linux / macOS /
 Windows) and architecture (x86-64 / ARM64), and falls back to any launcher
 available in the `PATH` in unsupported OSes or architectures.
 
 Use like
 ```scala
-import $ivy.`io.get-coursier.mill::mill-cs::0.1.0`
-import coursier.mill.MillCs
+//> using lib "io.get-coursier.util:get-cs::0.1.0"
+import coursier.getcs.GetCs
 
-object cs extends MillCs {
-  // override these to hard-code the coursier version you'd like to use
-  // def csVersion = MillCs.defaultVersion
-  // def csArmVersion = MillCs.defaultArmVersion
-}
-```
+val csCommand = GetCs.cs() // optionally pass a coursier version to hard-code the version you're using
 
-You can then get the command to run coursier with `cs.cs()` (typed as a `String`).
+new ProcessBuilder(csCommand, "fetch", "org:name:ver")
+  .start()
+```