add: install script

.gitignore

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+glab
+glab.tar.gz

README.md

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+# user/id-mrjk
+Just a bunch of dotfiles.
+
+## Install
+Clone and symlink or install with [ellipsis][ellipsis]:
+
+```
+$ ellipsis install ellipsis-glab
+```
+
+[ellipsis]: http://ellipsis.sh
+

ellipsis.sh

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+#!/usr/bin/env bash
+#
+# glab ellipsis package
+
+
+ELLIPSIS_SHELL_BIN="$HOME/.local/bin"
+ELLIPSIS_SHELL_HOME="$HOME/.local/shell"
+
+detect_platform() {
+
+    local kernel= machine=
+  
+    kernel=$(uname -s | tr "[:upper:]" "[:lower:]")
+    case "${kernel}" in
+      linux)
+        kernel=Linux
+        ;;
+      Darwin)
+        kernel=macOS
+        ;;
+    esac
+    case "$(uname -m)" in
+      x86_64)
+        machine=x86_64
+        ;;
+      i686 | i386)
+        machine=i386
+        ;;
+      aarch64 | arm64)
+        machine=arm64
+        ;;
+      *)
+        >&2 echo "Machine $(uname -m) not supported by the installer.\n" \
+          "Go to https://direnv for alternate installation methods."
+        return 1
+        ;;
+    esac
+  
+    echo "machine='$machine'; kernel='$kernel';"
+}
+
+get_gitlab_release () {
+  local repo=$1
+  local pattern=$2
+  local version=${3:-latest}
+
+    if [[ -n "${version:-}" ]]; then
+      gh_url_suffix="tags/${version}"
+    else
+      gh_url_suffix="latest"
+    fi
+
+  download_url=$(
+    curl -fL  "https://gitlab.com/api/v4/projects/$repo/releases?order_by=released_at" \
+      | sed 's/,/,\n/g' \
+      | grep -w url \
+      | cut -d '"' -f 4 \
+      | grep "$pattern"
+  )
+
+  if [[ "$version" == 'latest' ]]; then
+    echo "$download_url" | head -n 1
+  else
+    echo "$download_url" | grep "$version" | head -n 1
+  fi
+}
+
+
+# The following hooks can be defined to customize behavior of your package:
+pkg.install() {
+
+    local bin=glab
+    local archive=glab.tar.gz
+
+    # Fetch archive
+    if ! fs.file_exists $PKG_PATH/$archive; then
+
+        local download_url= kernel= machine=
+        eval "$(detect_platform)"
+        download_url=$(get_gitlab_release 34675721 "${kernel}_${machine}.tar.gz" latest)
+        curl -o "$PKG_PATH/$archive" -fL "$download_url"
+    fi
+
+    # Extract binary
+    local binary=$(tar -tf "$PKG_PATH/glab.tar.gz"  | grep bin/glab)
+    local components="${binary//[^\/]}"
+    components=${#components}
+    tar --extract \
+      --file="$PKG_PATH/$archive" \
+      --directory "$PKG_PATH" \
+      --strip-components=$components \
+      $binary
+    chmod +x glab
+
+}
+
+pkg.uninstall() {
+  local bin=glab
+  if fs.file_exists $PKG_PATH/$bin; then
+    rm $PKG_PATH/$bin
+#    rm $ELLIPSIS_SHELL_BIN/$bin
+  fi
+}
+
+pkg.link() {
+  local bin=glab
+  if ! fs.file_exists $PKG_PATH/$bin; then
+    pkg.install
+  fi
+  fs.link_rfile $bin $ELLIPSIS_SHELL_BIN/$bin
+}
+
+# pkg.push() {
+#     git.push
+# }
+
+# pkg.pull() {
+#     git.pull
+# }
+
+# pkg.installed() {
+#     git.status
+# }
+#
+# pkg.status() {
+#     git.diffstat
+# }
+