fix dotnet hooks with prefixes

pre_commit/languages/dotnet.py

@@ -2,6 +2,7 @@
 
 import contextlib
 import os.path
+import re
 from typing import Generator
 from typing import Sequence
 
@@ -58,9 +59,15 @@ def install_environment(
         )
 
         # Determine tool from the packaged file <tool_name>.<version>.nupkg
+        # https://learn.microsoft.com/en-us/nuget/concepts/package-versioning#version-basics
+        tool_name_re = re.compile(r'(.*)\.\d+\.\d+\.\d+(-.*)?\.nupkg')
+
         build_outputs = os.listdir(os.path.join(prefix.prefix_dir, build_dir))
         for output in build_outputs:
-            tool_name = output.split('.')[0]
+
+            tool_name_match = tool_name_re.match(output)
+            assert tool_name_match
+            tool_name = tool_name_match.group(1)
 
             # Install to bin dir
             helpers.run_setup_cmd(

testing/resources/dotnet_hooks_csproj_prefix_repo/.gitignore

@@ -0,0 +1,3 @@
+bin/
+obj/
+nupkg/

testing/resources/dotnet_hooks_csproj_prefix_repo/.pre-commit-hooks.yaml

@@ -0,0 +1,5 @@
+-   id: dotnet-example-hook
+    name: dotnet example hook
+    entry: testeroni.tool
+    language: dotnet
+    files: ''

testing/resources/dotnet_hooks_csproj_prefix_repo/Program.cs

@@ -0,0 +1,12 @@
+using System;
+
+namespace dotnet_hooks_repo
+{
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            Console.WriteLine("Hello from dotnet!");
+        }
+    }
+}

testing/resources/dotnet_hooks_csproj_prefix_repo/dotnet_hooks_csproj_prefix_repo.csproj

@@ -0,0 +1,9 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net7.0</TargetFramework>
+    <PackAsTool>true</PackAsTool>
+    <ToolCommandName>testeroni.tool</ToolCommandName>
+    <PackageOutputPath>./nupkg</PackageOutputPath>
+  </PropertyGroup>
+</Project>

tests/repository_test.py

@@ -1031,6 +1031,7 @@ def test_local_perl_additional_dependencies(store):
         'dotnet_hooks_csproj_repo',
         'dotnet_hooks_sln_repo',
         'dotnet_hooks_combo_repo',
+        'dotnet_hooks_csproj_prefix_repo',
     ),
 )
 def test_dotnet_hook(tempdir_factory, store, repo):