Use @ instead of / for separating package name and version

Author: 0xced

CHANGELOG.md

@@ -7,6 +7,19 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 ## [Unreleased][Unreleased]
 
 * Fixed a bug where `nugraph` could fail with `InvalidProjectFileException` if run from a directory containing a `Directory.Build.props` file.
+* Use `@` instead of `/` for separating package name and version. 
+
+Before:
+
+```shell
+nugraph Newtonsoft.Json/12.0.3
+```
+
+After:
+
+```shell
+nugraph Newtonsoft.Json@12.0.3
+```
 
 ## [0.5.0][0.5.0] - 2025-06-27
 

README.md

@@ -104,7 +104,7 @@ dotnet tool install --global nugraph
 
 Run `nugraph <NuGetPackageName>` to generate the dependency graph of a NuGet package. For example, run `nugraph Serilog.Sinks.File` to generate the dependency graph of the [Serilog.Sinks.File](https://www.nuget.org/packages/Serilog.Sinks.File) package.
 
-A specific version can be explicitly requested by appending **/version** to the package name, for example `nugraph Serilog.Sinks.File/4.1.0`. When no version is specified, the latest version available on NuGet is chosen. 
+A specific version can be explicitly requested by appending **@version** to the package name, for example `nugraph Serilog.Sinks.File@4.1.0`. When no version is specified, the latest version available on NuGet is chosen. 
 
 Many packages support multiple target frameworks and sometimes the dependencies varies across different target frameworks. A target framework is guessed automatically, but it can be overriden with the `-f` or `--framework` option.
 

src/nugraph/GraphCommandSettings.cs

@@ -32,7 +32,7 @@ internal sealed class GraphCommandSettings : CommandSettings
     [CommandArgument(0, "[SOURCE]")]
     [Description("The source of the graph\n" +
                  "Can be either\n" +
-                 "  * the name of a NuGet package, optionally with a specific version, e.g. [b]Newtonsoft.Json/13.0.3[/]\n" +
+                 "  * the name of a NuGet package, optionally with a specific version, e.g. [b]Newtonsoft.Json@13.0.3[/]\n" +
                  "  * a .NET project file (csproj/fsproj/vbproj)\n" +
                  "  * a directory containing a single .NET project\n")]
     public string? SourceInput { get; init; }
@@ -233,7 +233,7 @@ private static OnlineService GetOnlineService(string fmt)
 
     private static PackageIdentity GetPackageIdentity(string packageId)
     {
-        var parts = packageId.Split('/');
+        var parts = packageId.Split('@');
         if (parts.Length == 2)
         {
             if (NuGetVersion.TryParse(parts[1], out var version))

src/nugraph/Program.cs

@@ -38,7 +38,7 @@ public async Task<int> RunAsync(params string[] args)
         {
             config.AddExample("spectre.console/src/Spectre.Console.Cli/Spectre.Console.Cli.csproj", "--include-version");
             config.AddExample("Serilog.Sinks.MSSqlServer", "--ignore", "Microsoft.Data.SqlClient", "--ignore", "\"System.*\"");
-            config.AddExample("Newtonsoft.Json/12.0.3", "--framework", "netstandard1.0");
+            config.AddExample("Newtonsoft.Json@12.0.3", "--framework", "netstandard1.0");
             config.AddExample("Azure.Core", "--direction", "TopToBottom", "--output", "Azure.Core.gv");
             config.AddExample("Polly", "--format", "dot", "--title", "\"\"");
 #if DEBUG

tests/nugraph.Tests/NugraphTests.cs

@@ -79,17 +79,17 @@ public async Task Package_Serilog_WorkingDirectoryUsingArcadeSdk()
     }
 
     [Test]
-    public async Task Package_Serilog_430_net60()
+    public async Task Package_Serilog_401_net60()
     {
-        var result = await nugraph.RunAsync(["Serilog/4.3.0", "--framework", "net6.0"]);
+        var result = await nugraph.RunAsync(["Serilog@4.0.1", "--framework", "net6.0"]);
 
         result.Should().Match(stdOutPattern: "https://mermaid.live/view#pako:*", stdErrPattern: """
-                                Generating dependency graph for Serilog 4.3.0
-                                Generating dependency graph for Serilog 4.3.0 (net6.0)
+                                Generating dependency graph for Serilog 4.0.1
+                                Generating dependency graph for Serilog 4.0.1 (net6.0)
                                 """)
             .And.UrlHasDiagram("""
                                ---
-                               title: Dependency graph of Serilog 4.3.0 (net6.0)
+                               title: Dependency graph of Serilog 4.0.1 (net6.0)
                                ---
 
                                %% Generated by https://github.com/0xced/nugraph
@@ -103,7 +103,7 @@ graph LR
 
                                class Serilog root
                                class Serilog default
-                               click Serilog "https://www.nuget.org/packages/Serilog/4.3.0" "Serilog 4.3.0"
+                               click Serilog "https://www.nuget.org/packages/Serilog/4.0.1" "Serilog 4.0.1"
                                """);
     }