Installing With Make

zplugin ice as"program" pick"$ZPFX/bin/git-*" make"PREFIX=$ZPFX"
zplugin light tj/git-extras

Makefile of this project has only one needed target – install, which is called by default,
it also does building of the scripts that it installs, so it does 2 tasks,
for Makefile with 2 targets, one could use make"all install PREFIX=…",
pick'…' will chmod +x all matching files and add $ZPFX/bin/ to $PATH,
$ZPFX is provided by Zplugin, it is ~/.zplugin/polaris by default, can be also customized.

Below is a hard core but fully working method of managing a software (sdkman.io) with Zplugin.

# The invocation uses https://github.com/zdharma/null repo as a placeholder
# for the atclone'' and atpull'' hooks

zplugin ice as"program" pick"$ZPFX/sdkman/bin/sdk" id-as'sdkman' run-atpull \
    atclone"wget https://get.sdkman.io -O scr.sh; SDKMAN_DIR=$ZPFX/sdkman bash scr.sh" \
    atpull"SDKMAN_DIR=$ZPFX/sdkman sdk selfupdate" \
    atinit"export SDKMAN_DIR=$ZPFX/sdkman; source $ZPFX/sdkman/bin/sdkman-init.sh"
zplugin light zdharma/null