feat: Elixir 0.10.0 package first release

- ensure Erlang and toolsroot are installed
 - add bin directory to PATH
 - uninstall removes Elixir from tools directory and removes PATH mods

Elixir/Elixir.nuspec

@@ -0,0 +1,31 @@
+<?xml version="1.0"?>
+<package xmlns="http://schemas.microsoft.com/packaging/2010/07/nuspec.xsd">
+  <metadata>
+    <id>Elixir</id>
+    <title>Elixir</title>
+    <version>0.10.0</version>
+    <authors>Jose Valim</authors>
+    <owners>Ethan J Brown</owners>
+    <summary>Elixir is a functional meta-programming aware language built on top of the Erlang VM.</summary>
+    <description>Elixir is a functional meta-programming aware language built on top of the Erlang VM. It is a dynamic language with flexible syntax with macros support that leverages Erlang's abilities to build concurrent, distributed, fault-tolerant applications with hot code upgrades.
+
+Elixir also provides first-class support for pattern matching, polymorphism via protocols (similar to Clojure's), aliases and associative data structures (usually known as dicts or hashes in other programming languages).
+
+Finally, Elixir and Erlang share the same bytecode and data types. This means you can invoke Erlang code from Elixir (and vice-versa) without any conversion or performance hit. This allows a developer to mix the expressiveness of Elixir with the robustness and performance of Erlang.</description>
+    <releaseNotes>https://github.com/elixir-lang/elixir/releases/</releaseNotes>
+    <projectUrl>http://elixir-lang.org/</projectUrl>
+    <tags>erlang concurrent programming language sdk otp elixir ruby</tags>
+    <licenseUrl>https://github.com/elixir-lang/elixir/blob/master/LICENSE</licenseUrl>
+    <requireLicenseAcceptance>false</requireLicenseAcceptance>
+    <iconUrl>https://secure.gravatar.com/avatar/4c5c2c297ed9f4664cfbe7733a011fb2?s=400&amp;d=https://a248.e.akamai.net/assets.github.com%2Fimages%2Fgravatars%2Fgravatar-user-420.png</iconUrl>
+    <dependencies>
+      <dependency id="toolsroot"/>
+      <!-- mingw installer is broken, not silent, only needed to compile anyhow -->
+      <!-- <dependency id="MinGw" version="0.5.20121115" /> -->
+      <dependency id="Erlang16" />
+    </dependencies>
+  </metadata>
+  <files>
+    <file src="tools\**" target="tools" />
+  </files>
+</package>

Elixir/tools/chocolateyInstall.ps1

@@ -0,0 +1,36 @@
+$package = 'Elixir'
+$version = '0.10.0'
+
+try {
+  $params = @{
+    PackageName = $package;
+    FileType = 'zip';
+    Url = "https://github.com/elixir-lang/elixir/releases/download/v$version/v$version.zip";
+    UnzipLocation = Join-Path $Env:SystemDrive 'tools';
+  }
+
+  $binRoot = Join-Path $Env:SystemDrive $Env:Chocolatey_Bin_Root
+  if (Test-Path $binRoot)
+  {
+    $params.UnzipLocation = $binRoot
+  }
+
+  $params.UnzipLocation = Join-Path $params.UnzipLocation 'Elixir'
+
+  if (!(Test-Path($params.UnzipLocation)))
+  {
+    New-Item $params.UnzipLocation -Type Directory | Out-Null
+  }
+
+  Install-ChocolateyZipPackage @params
+
+  $elixirBin = Join-Path $params.UnzipLocation 'bin'
+
+  Install-ChocolateyPath $elixirBin
+
+  Write-ChocolateySuccess $package
+} catch {
+  Write-ChocolateyFailure $package "$($_.Exception.Message)"
+  throw
+}
+

Elixir/tools/chocolateyUninstall.ps1

@@ -0,0 +1,35 @@
+$package = 'Elixir'
+
+try {
+  $location = Join-Path $Env:SystemDrive $Env:Chocolatey_Bin_Root
+  if (!(Test-Path $location))
+  {
+    $location = Join-Path $Env:SystemDrive 'tools'
+  }
+  $location = Join-Path $location $package
+
+  if (Test-Path $location)
+  {
+    Remove-Item $location -Recurse -Force
+  }
+
+  $binLocation = (Join-Path $location 'bin') -replace '\\', '\\'
+
+  $userPaths = [Environment]::GetEnvironmentVariable('Path', 'User') -split ';' |
+    ? { ($_ -notmatch $binLocation) -and (![String]::IsNullOrEmpty($_)) } |
+    Select-Object -Unique
+
+  [Environment]::SetEnvironmentVariable('Path', ($userPaths -join ';'), 'User')
+
+  Write-Host @'Please restart your current shell session to access Elixir commands:
+  elixir
+  elixirc
+  mix
+  iex.bat (use batch file within Powershell due to name collision)
+  '@
+
+  Write-ChocolateySuccess $package
+} catch {
+  Write-ChocolateyFailure $package "$($_.Exception.Message)"
+  throw
+}