feat: resolve handler packages

README.md

@@ -73,19 +73,24 @@ a typical handler will accept
 a newline-separated list of packages to install,
 enabling batching and the consolidation of interdependent packages into one unit.
 
-## What instalee is not
+When installing a package and there is no handler available,
+but a package with the name of a handler of the package has an installable candidate,
+the handler will be installed, made available and used.
+
+## Features 
+
+### What instalee is not
 - a (central) package repository containing package sources
 - a package manager that can inspect or remove packages
 
-## Planned
+### Planned
 - detection mechanism for handlers and features
   (e.g. whether they support batching)
 - helper/hook for adding packages to groups upon install
   (at least for `pacman`)
 
-## TODOs
+### TODOs
 - Debug corner cases
-- Implement Collections
 - Handler preparation - update repos and cache last update time in /tmp
 
 ### Windows

handlers.available

@@ -1,8 +1,6 @@
 arch
 aur
-snap
-flatpak
 script
-make
 zsh
 linux
+cargo

handlers/cargo/install

@@ -0,0 +1,2 @@
+#!/bin/sh
+cargo install "$@"

instalee

@@ -11,7 +11,7 @@ destress() { echo "$1"; }
 getcontent() { test -x "$1" && "$1" || cat "$1"; }
 
 # Get available package entries for given package
-get() {
+getentries() {
 	cat "$home/handlers.available" | while read handler
 	do find "$home/packages/$1" -name "$handler*" 2>/dev/null
 	done
@@ -19,23 +19,31 @@ get() {
 
 # Install a package by name
 installpkg() {
-	pkgs=$(get "$1")
+	test "$1" = "--quiet" && local quiet=true && shift
-	if test -z "$pkgs"
+	local pkgs=$(getentries "$1")
-	then
+	if test -z "$pkgs"; then
-		printf "No handler available for package '%s'\n" "$1" >&2
+		local handlers=$(find "$home/packages/$1" -type f -printf "%f\n" 2>/dev/null)
+		for handler in $handlers
+		do installpkg --quiet "$handler" &&
+				echo "$handler" >> "$home/handlers.available" &&
+				installpkg "$1" &&
+				return $?
+		done
+		test "$quiet" ||
+			echo "No handler available for package '$1'" >&2
 		return 2
 	fi
-	for pkg in $pkgs; do
+	for pkg in $pkgs
-		highlight "$pkg"
+	do  highlight "$pkg"
-		name="$(basename $pkg)"
+		local name="$(basename $pkg)"
-		base="${name%_*}"
+		local base="${name%_*}"
 
-		ext="${name#$base}"
+		local ext="${name#$base}"
-		handler="$home/handlers/$base"
+		local handler="$home/handlers/$base"
 		if test -d "$handler"
 		then
-			args="$(getcontent "$pkg")"
+			local args="$(getcontent "$pkg" | grep . || echo "$1")"
-			install="$(find "$handler" -name "install$ext" | head -1)" &&
+			local install="$(find "$handler" -name "install$ext" | head -1)" &&
 				destress " $install $args" &&
 				$install $args
 		else
@@ -72,6 +80,7 @@ case "$1" in
 		;;
 esac
 
+exitcode=0
 while test $# -gt 0; do
 	groupfile="$home/groups/$1"
 	if test -f "$groupfile"
@@ -80,6 +89,8 @@ while test $# -gt 0; do
 				 "$home/handlers/$(head -1 handlers.available)/install" "$pkg"
 		 done
 	else installpkg "$1"
+		 exitcode=$(expr $exitcode \| $?)
 	fi
 	shift
 done
+exit $exitcode

packages/cargo/arch

@@ -0,0 +1 @@
+rust