Set up CI, and some tweaks to dist.ini and maint scripts

- Set up Github Workflow for testing and release on tag

- Add maint/setup-ci.sh script to set up CI environment

- Tweak maint/bump_fatpack.pl so it handles non-minified fatpacked modules

- Remove maint/merge_master.pl from dist.ini since it runs git
operations

.github/workflows/main.yml

@@ -0,0 +1,32 @@
+name: Main
+
+on: push
+
+jobs:
+  main:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Install build deps
+        run: |
+          maint/setup-ci.sh
+          echo PERL5LIB=$(pwd)/local/lib/perl5 >> "$GITHUB_ENV"
+          echo PATH=$(pwd)/local/bin:$PATH >> "$GITHUB_ENV"
+      - name: Build
+        id: build
+        run: |
+          dzil build
+          echo "tarball=$(ls App-cpanminus-*.tar.gz)" >> "$GITHUB_OUTPUT"
+      - name: Test installing Mojolicious
+        run: |
+          ./cpanm Mojolicious
+          env PERL5LIB=$HOME/perl5/lib/perl5 perl -MMojolicious -E 'say $Mojolicious::VERSION'
+      - name: Release if tag
+        uses: softprops/action-gh-release@v2
+        if: startsWith(github.ref, 'refs/tags/')
+        with:
+          files: |
+            ${{ steps.build.outputs.tarball }}
+            cpanm
+            LICENSE

dist.ini

@@ -27,4 +27,3 @@ run = %x maint/bump_fatpack.pl %v ; bump the version of fatpacked executable on
 
 [Run::AfterRelease]
 run = rm lib/App/cpanminus/fatscript.pm
-run = %x maint/merge_master.pl

maint/bump_fatpack.pl

@@ -7,10 +7,12 @@ sub find_version {
     my $file = shift;
 
     open my $fh, "<", $file or die $!;
-    while (<$fh>) {
-        /package App::cpanminus;our\$VERSION="(.*?)"/ and return $1;
-    }
-    return;
+    my $f = do { local undef $/; <$fh> };
+    close $fh;
+
+    $f=~m/package App::cpanminus;\n\s*our \$VERSION = "(.*?)"/;
+
+    return $1;
 }
 
 my $new_ver = shift @ARGV;

maint/setup-ci.sh

@@ -0,0 +1,10 @@
+#!/usr/bin/env bash
+
+set -ex -o pipefail
+
+curl -fsSL https://raw.githubusercontent.com/skaji/cpm/main/cpm | \
+    perl - install \
+    Dist::Zilla Dist::Zilla::PluginBundle::Milla \
+    Dist::Zilla::Plugin::Run::BeforeBuild \
+    App::FatPacker \
+    Perl::Version