git foo will automatically install and run git-foo (#3537)

.vscode/settings.json

@@ -3,5 +3,4 @@
   "deno.lint": true,
   "deno.unstable": true,
   "deno.config": ".github/deno.jsonc",
-  "deno.importMap": "../cli/import-map.json"
 }

projects/git-scm.org/git-shim

@@ -0,0 +1,31 @@
+#!/bin/sh
+
+set -e
+
+find_git_command() {
+  for arg in "$@"; do
+    case $arg in
+    -*);;
+    *)
+      echo $arg
+      return  # found the command!
+    esac
+  done
+}
+
+libexec="$(cd "$(dirname "$0")/.." && pwd)"/libexec
+
+# extract the git subcommand
+cmd=$(find_git_command "$@")
+
+if [ -z "$cmd" ]; then
+  exec "$libexec/git" "$@"
+elif [ -x "$libexec/git-$_CMD" -a -f "$libexec/git-$cmd" ]; then
+  exec "$libexec/git" "$@"
+elif type "git-$cmd" >/dev/null 2>&1; then
+  exec "$libexec/git" "$@"
+elif command -v pkgx >/dev/null 2>&1 && pkg=$(pkgx --provider git-$cmd); then
+  exec pkgx +$pkg "$libexec/git" "$@"
+else
+  exec "$libexec/git" "$@"
+fi

projects/git-scm.org/package.yml

@@ -12,6 +12,7 @@ dependencies:
   curl.se/ca-certs: '*'
   perl.org: '*'
   libexpat.github.io: ~2
+  pkgx.sh: ^1
 
 runtime:
   env:
@@ -19,65 +20,76 @@ runtime:
     GIT_SSL_CAINFO: ${{deps.curl.se/ca-certs.prefix}}/ssl/cert.pem
 
 build:
-  script: |
-    mv props/config.mak .
+  script:
+    - mv props/config.mak .
 
-    ./configure $CONF
-    make install $BAKE
+    - ./configure
+        --prefix={{ prefix }}
+        --with-perl={{ deps.perl.org.prefix }}
+        --with-gitconfig=etc/gitconfig
 
-    cd contrib/subtree
+    - make install --jobs {{ hw.concurrency }} NO_TCLTK=1
+
+    - run: |
         make
         make install
+      working-directory: contrib/subtree
 
-    if test "{{ hw.platform }}" = "darwin"; then
-      cd "$SRCROOT/contrib/credential/osxkeychain"
+    - run: |
         make
         mv git-credential-osxkeychain "{{prefix}}"/bin
         make clean
-      cd "$SRCROOT/contrib/subtree"
-    fi
+      working-directory: contrib/credential/osxkeychain
+      if: darwin
 
-    mv git-subtree "{{prefix}}"/libexec
+    - run: mv git-subtree "{{prefix}}"/libexec
+      working-directory: contrib/subtree
 
-    cd "{{prefix}}"
-    DEBUG=1 fix-shebangs.ts bin/* libexec/*
+    - run: fix-shebangs.ts bin/* libexec/*
+      working-directory: ${{prefix}}
 
-    mkdir -p etc
-    cp "$SRCROOT"/props/git* etc
+    - run: cp "$SRCROOT"/props/gitconfig "$SRCROOT"/props/gitignore .
+      working-directory: ${{prefix}}/etc
+
+    - run: |
+        rm bin/git
+        cp $SRCROOT/props/git-shim bin/git
+      working-directory: ${{prefix}}
   env:
     V: 1
-    BAKE:
-      - --jobs {{ hw.concurrency }}
-      - NO_TCLTK=1
-    CONF:
-      - --prefix={{ prefix }}
-      - --with-perl={{ deps.perl.org.prefix }}
-      - --with-gitconfig=etc/gitconfig
     INSTALL_STRIP: -s
 
-test: |
-  git clone https://github.com/teaxyz/white-paper 2>&1 | tee clone-output.txt
+test:
+  # bug in pkgx where it doesn’t auto sync for --provides
+  - pkgx --sync
 
   # check that the templates can be found
+  - run: |
+      git clone https://github.com/teaxyz/white-paper 2>&1 | tee clone-output.txt
       if grep -q 'warning: templates not found in' clone-output.txt; then
-    false
+        exit 1
       fi
+    working-directory: $(mktemp -d)
 
-  mkdir foo
-  cd foo
+  - cd $(mktemp -d)
+
+  - run: |
       touch .DS_Store testfile
       git init
       git add .
       test "$(git diff --name-only --cached)" = "testfile"
 
   # necessary so `git commit` will work
+  - |
       git config user.email "you@example.com"
       git config user.name "Your Name"
 
   # necessary to check the libexec binaries work
-  git commit --message "test"
+  - git commit --message "test"
 
-  git subtree add --prefix teaxyz-subtree https://github.com/teaxyz/white-paper main --squash
+  - git subtree add --prefix teaxyz-subtree https://github.com/teaxyz/white-paper main --squash
+
+  - git gone --version
 
 provides:
   linux: