package manager wip

sys/apis/packages.lua

@@ -0,0 +1,32 @@
+_G.requireInjector(_ENV)
+
+local Util = require('util')
+
+local fs = _G.fs
+
+local PACKAGE_DIR = 'packages'
+
+local Packages = { }
+
+function Packages:installed()
+	self.cache = { }
+
+	if fs.exists(PACKAGE_DIR) then
+		for _, dir in pairs(fs.list(PACKAGE_DIR)) do
+			local path = fs.combine(fs.combine(PACKAGE_DIR, dir), '.package')
+			self.cache[dir] = Util.readTable(path)
+		end
+	end
+
+	return self.cache
+end
+
+function Packages:list()
+	return Util.readTable('sys/packageList.lua') or { }
+end
+
+function Packages:isInstalled(package)
+	return self:installed()[package]
+end
+
+return Packages

sys/apps/Packages.lua

@@ -0,0 +1,13 @@
+_G.requireInjector(_ENV)
+
+local Packages = require('packages')
+local Util     = require('util')
+
+local args = { ... }
+
+if args[1] == 'list' then
+	for k,v in pairs(Packages:list()) do
+		Util.print('[%s] %s', Packages:isInstalled(k) and 'x' or ' ', k)
+	end
+end
+

sys/extensions/6.packages.lua

@@ -0,0 +1,38 @@
+_G.requireInjector(_ENV)
+
+local Packages = require('packages')
+local Util     = require('util')
+
+local shell = _ENV.shell
+local fs = _G.fs
+
+local appPaths = Util.split(shell.path(), '(.-):')
+local luaPaths = Util.split(_G.LUA_PATH, '(.-):')
+
+local function addPath(t, e)
+	local function hasEntry()
+		for _,v in ipairs(t) do
+			if v == e then
+				return true
+			end
+		end
+	end
+	if not hasEntry() then
+		table.insert(t, 1, e)
+	end
+end
+
+-- dependency graph
+-- https://github.com/mpeterv/depgraph/blob/master/src/depgraph/init.lua
+
+for name, package in pairs(Packages:installed()) do
+	if  package.mount then
+		fs.mount(table.unpack(Util.matches(package.mount)))
+	end
+
+	addPath(appPaths, fs.combine(fs.combine('packages', name), 'apps'))
+	addPath(luaPaths, fs.combine(fs.combine('packages', name), 'apis'))
+end
+
+shell.setPath(table.concat(appPaths, ':'))
+_G.LUA_PATH = table.concat(luaPaths, ':')

sys/packageList.lua

@@ -0,0 +1,4 @@
+{
+	[ 'opus-neural' ] = 'file://packages/opus-neural/.package',
+	[ 'opus-miners' ] = 'file://packages/opus-miners/.package',
+}