Add install nu script

dot_local/bin/executable_install-nu

@@ -0,0 +1,27 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+source "${XDG_DATA_HOME}/buddy-up/includes/utils.sh"
+
+main () (
+    APP=nushell
+    VERSION=${VERSION:-0.100.0}
+    DEST="${XDG_DATA_HOME}/apps/releases/${APP}"
+    URL=https://github.com/nushell/nushell/releases/download/${VERSION}/nu-${VERSION}-$(uname -m)-$(get_os).tar.gz
+
+    extract_tarball "${URL}" "${DEST}/${VERSION}" "--strip-component 1"
+    set_current_link "${DEST}" "${VERSION}"
+
+    find "${DEST}" -type f -executable -exec basename {} \; | while read -r app ; do
+        set_link "${XDG_BIN_HOME}/${app}" "${DEST}" "${app}"
+    done
+)
+
+get_os () (
+    case $(uname -s) in
+        Linux*)     echo unknown-linux-gnu;;
+        Darwin*)    echo apple-darwin;;
+        *)          >&2 echo "unsupported os: $(uname -s)"; exit 1;;
+    esac
+)

dot_local/bin/executable_install-starship

@@ -11,7 +11,7 @@ function get_os () {
 }
 
 APP=starship
-VERSION=${VERSION:-1.19.0}
+VERSION=${VERSION:-1.21.1}
 DEST="${XDG_DATA_HOME}/apps/releases/${APP}"
 URL=https://github.com/starship/starship/releases/download/v${VERSION}/starship-$(uname -m)-$(get_os).tar.gz