Copy paket exe to cwd on init

src/Paket.Core/Constants.fs

@@ -3,15 +3,33 @@
 open System
 open System.IO
 
+[<Literal>]
+let GithubUrl = "https://github.com"
+
 [<Literal>]
 let DefaultNugetStream = "https://nuget.org/api/v2"
 
+[<Literal>]
+let GithubReleasesUrl = "https://api.github.com/repos/fsprojects/Paket/releases"
+
+[<Literal>]
+let GithubReleaseDownloadUrl = "https://github.com/fsprojects/Paket/releases/download"
+
 [<Literal>]
 let LockFileName = "paket.lock"
 
 [<Literal>]
 let DependenciesFileName = "paket.dependencies"
 
+[<Literal>]
+let PaketFolderName = ".paket"
+
+[<Literal>]
+let BootstrapperFileName = "paket.bootstrapper.exe"
+
+[<Literal>]
+let TargetsFileName = "paket.targets"
+
 [<Literal>]
 let ReferencesFile = "paket.references"
 

src/Paket.Core/Paket.Core.fsproj

@@ -4,8 +4,7 @@
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
-    <SchemaVersion>2.0</SchemaVersion>
-    <ProjectGuid>{7bab0ae2-089f-4761-b138-a717aa2f86c5}</ProjectGuid>
+    <ProjectGuid>{7BAB0AE2-089F-4761-B138-A717AA2F86C5}</ProjectGuid>
     <OutputType>Library</OutputType>
     <RootNamespace>Paket</RootNamespace>
     <AssemblyName>Paket.Core</AssemblyName>
@@ -18,14 +17,11 @@
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
-    <DebugType>full</DebugType>
     <Optimize>false</Optimize>
     <Tailcalls>false</Tailcalls>
     <OutputPath>..\..\bin</OutputPath>
     <DefineConstants>DEBUG;TRACE</DefineConstants>
     <WarningLevel>3</WarningLevel>
-    <DocumentationFile>
-    </DocumentationFile>
     <StartArguments>update</StartArguments>
     <StartAction>Project</StartAction>
     <StartProgram>paket.exe</StartProgram>
@@ -41,6 +37,7 @@
     <DefineConstants>TRACE</DefineConstants>
     <WarningLevel>3</WarningLevel>
     <DocumentationFile>..\..\bin\Paket.Core.XML</DocumentationFile>
+    <DebugSymbols>true</DebugSymbols>
   </PropertyGroup>
   <PropertyGroup>
     <MinimumVisualStudioVersion Condition="'$(MinimumVisualStudioVersion)' == ''">11</MinimumVisualStudioVersion>
@@ -117,6 +114,7 @@
     <Compile Include="PackageMetaData.fs" />
     <Compile Include="PackageProcess.fs" />
     <Compile Include="Environment.fs" />
+    <Compile Include="Releases.fs" />
     <Compile Include="Simplifier.fs" />
     <Compile Include="VSIntegration.fs" />
     <Compile Include="NugetConvert.fs" />
@@ -269,4 +267,4 @@
       </ItemGroup>
     </When>
   </Choose>
-</Project>
+</Project>

src/Paket.Core/PublicAPI.fs

@@ -230,6 +230,12 @@ type Dependencies(dependenciesFileName: string) =
         |> this.Process
         |> List.map (fun (PackageName p,_,newVersion) -> p,newVersion)
 
+    /// Downloads the latest paket.bootstrapper into the .paket folder.
+    member this.DownloadLatestBootstrapper() : unit =
+        Utils.RunInLockedAccessMode(
+            this.RootPath,
+            fun () -> Releases.downloadLatestBootstrapper |> this.Process)
+
     /// Pulls new paket.targets and bootstrapper and puts them into .paket folder.
     member this.TurnOnAutoRestore(): unit =
         Utils.RunInLockedAccessMode(

src/Paket.Core/Releases.fs

@@ -0,0 +1,63 @@
+module Paket.Releases
+
+open System.IO
+open System.Diagnostics
+open Logging
+open System
+open Chessie.ErrorHandling
+open Paket.Domain
+
+let private getLatestVersionFromJson (data : string) =
+    try 
+        let start = data.IndexOf("tag_name") + 11
+        let end' = data.IndexOf("\"", start)
+        (data.Substring(start, end' - start)) |> SemVer.Parse |> ok
+    with _ ->
+        fail ReleasesJsonParseError
+
+let private download version (file:FileInfo) client = 
+    trial {
+        tracen (sprintf "%A" file)
+
+        do! createDir(file.DirectoryName)
+        let url = sprintf "%s/%s/%s" Constants.GithubReleaseDownloadUrl (string version) file.Name
+
+        do! downloadFileSync url file.FullName client
+    }
+
+let private doesNotExistsOrIsNewer (file:FileInfo) latest =
+    if (not <| file.Exists) then true
+    else
+        let verInfo = FileVersionInfo.GetVersionInfo file.FullName
+        let currentVersion = SemVer.Parse verInfo.FileVersion
+        currentVersion < latest
+
+/// Downloads the latest version of the given files to the destination dir
+let downloadLatestVersionOf files destDir =
+    use client = createWebClient(Constants.GithubUrl, None)
+
+    trial {
+        let! data = client |> downloadStringSync Constants.GithubReleasesUrl
+        let! latestVersion = getLatestVersionFromJson data
+
+        let! downloads = 
+            files
+            |> List.map (fun file -> FileInfo(Path.Combine(destDir, file)))
+            |> List.filter (fun file -> doesNotExistsOrIsNewer file latestVersion)
+            |> List.map (fun file -> download latestVersion file client)
+            |> collect
+
+        ignore downloads
+    }
+
+/// Downloads the latest version of the paket.bootstrapper to the .paket dir
+let downloadLatestBootstrapper environment =        
+    let exeDir = Path.Combine(environment.RootDirectory.FullName, Constants.PaketFolderName)
+
+    downloadLatestVersionOf [Constants.BootstrapperFileName] exeDir
+
+/// Downloads the latest version of the paket.bootstrapper and paket.targets to the .paket dir
+let downloadLatestBootstrapperAndTargets environment =        
+    let exeDir = Path.Combine(environment.RootDirectory.FullName, Constants.PaketFolderName)
+
+    downloadLatestVersionOf [Constants.TargetsFileName; Constants.BootstrapperFileName] exeDir

src/Paket.Core/VSIntegration.fs

@@ -5,50 +5,26 @@ open Logging
 open System
 open Chessie.ErrorHandling
 open Domain
+open Releases
 
-
-let private getLatestVersionFromJson (data : string) =
-    try 
-        let start = data.IndexOf("tag_name") + 11
-        let end' = data.IndexOf("\"", start)
-        (data.Substring(start, end' - start)) |> SemVer.Parse |> ok
-    with _ ->
-        fail ReleasesJsonParseError
-
+/// Activates the Visual Studio Nuget autorestore feature in all projects
 let TurnOnAutoRestore environment =
     let exeDir = Path.Combine(environment.RootDirectory.FullName, ".paket")
-
-    use client = createWebClient("https://github.com",None)
-
-    let download version file = 
-        trial {
-            do! createDir(exeDir)
-            let fileName = Path.Combine(exeDir, file)
-            let url = sprintf "https://github.com/fsprojects/Paket/releases/download/%s/%s" (string version) file
-
-            do! downloadFileSync url fileName client
-        }
 
-    trial { 
-        let releasesUrl = "https://api.github.com/repos/fsprojects/Paket/releases";
-
-        let! data = client |> downloadStringSync releasesUrl
-        let! latestVersion = getLatestVersionFromJson data
-
-        let! downloads = 
-            ["paket.targets"; "paket.bootstrapper.exe"] 
-            |> List.map (download latestVersion)
-            |> collect
+    trial {         
+        do! downloadLatestBootstrapperAndTargets environment
+        let paketTargetsPath = Path.Combine(exeDir, "paket.targets")
 
         environment.Projects
         |> List.map fst
         |> List.iter (fun project ->
-            let relativePath = createRelativePath project.FileName (Path.Combine(exeDir, "paket.targets")) 
+            let relativePath = createRelativePath project.FileName paketTargetsPath
             project.AddImportForPaketTargets(relativePath)
             project.Save()
         )
     } 
 
+/// Deactivates the Visual Studio Nuget autorestore feature in all projects
 let TurnOffAutoRestore environment = 
     let exeDir = Path.Combine(environment.RootDirectory.FullName, ".paket")
 

src/Paket/Program.fs

@@ -8,6 +8,7 @@ open System.IO
 
 open Paket.Logging
 open Paket.Commands
+open Paket.Releases
 
 open Nessos.UnionArgParser
 open PackageSources
@@ -122,6 +123,7 @@ let findRefs (results : ArgParseResults<_>) =
 
 let init (results : ArgParseResults<InitArgs>) =
     Dependencies.Init()
+    Dependencies.Locate().DownloadLatestBootstrapper()
 
 let install (results : ArgParseResults<_>) =
     let force = results.Contains <@ InstallArgs.Force @>