Add runtime lookup (#94)

.github/workflows/dotnet.yaml

@@ -31,7 +31,7 @@ jobs:
     - name: Publish
       run: dotnet publish Example
     - name: Run example
-      run: ".\\Example\\bin\\Release\\net8.0\\win-x64\\Example.exe"
+      run: ".\\Example\\bin\\Release\\net8.0\\Example.exe"
 
   build:
     strategy:
@@ -57,10 +57,14 @@ jobs:
       run: nix develop --command dotnet build --no-restore --configuration ${{matrix.config}}
     - name: Test
       run: nix develop --command dotnet test --no-build --verbosity normal --configuration ${{matrix.config}}
-    - name: Publish example
+    - name: Publish example self-contained
-      run: nix develop --command dotnet publish --no-build --verbosity normal --configuration ${{matrix.config}} Example
+      run: nix develop --command dotnet publish --self-contained --runtime linux-x64 --verbosity normal --configuration ${{matrix.config}} Example
     - name: Run example self-contained
-      run: "./Example/bin/${{matrix.config}}/*/*/Example"
+      run: "./Example/bin/${{matrix.config}}/net*/*-*/Example"
+    - name: Publish example non-self-contained
+      run: nix develop --command dotnet publish --verbosity normal --configuration ${{matrix.config}} Example
+    - name: Run example non-self-contained
+      run: "./Example/bin/${{matrix.config}}/net*/Example"
 
   build-nix:
     runs-on: ubuntu-latest

Example/Example.fsproj

@@ -3,7 +3,6 @@
   <PropertyGroup>
     <OutputType>Exe</OutputType>
     <TargetFramework>net8.0</TargetFramework>
-    <SelfContained>true</SelfContained>
   </PropertyGroup>
 
   <ItemGroup>

Example/Program.fs

@@ -1,6 +1,8 @@
-namespace Example
+namespace Example
 
 open System
+open System.IO
+open System.Reflection
 open WoofWare.DotnetRuntimeLocator
 
 module Program =
@@ -18,4 +20,16 @@ module Program =
         for f in info.Frameworks do
             Console.WriteLine $"Framework: %O{f}"
 
+        // Identify the runtime which would execute this DLL
+        let self = Assembly.GetExecutingAssembly().Location
+        let runtimeSearchDirs = DotnetRuntime.SelectForDll self
+        // For example, the System.Text.Json.dll which this DLL would load:
+        runtimeSearchDirs
+        |> Seq.tryPick (fun dir ->
+            let attempt = Path.Combine (dir, "System.Text.Json.dll")
+            if File.Exists attempt then Some attempt else None
+        )
+        |> Option.get
+        |> fun s -> Console.WriteLine $"System.Text.Json location: %s{s}"
+
         0

README.md

@@ -11,6 +11,11 @@ See [the example](Example/Program.fs).
 let info = DotnetEnvironmentInfo.Get ()
 // or, if you already know a path to the `dotnet` executable...
 let info = DotnetEnvironmentInfo.GetSpecific "/path/to/dotnet"
+
+// identify the directories containing the framework which would execute a given DLL
+let dirsToSearch : string seq = DotnetRuntime.SelectForDll "/path/to/dll.dll"
+// or, if you would be running with a specific `/path/to/dotnet exec /path/to/dll.dll`:
+let dirsToSearch : string seq = DotnetRuntime.SelectForDll ("/path/to/dll.dll", "/path/to/dotnet")
 ```
 
 ## Troubleshooting

WoofWare.DotnetRuntimeLocator/DotnetRuntime.cs

@@ -0,0 +1,307 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text.Json;
+
+namespace WoofWare.DotnetRuntimeLocator;
+
+/// <summary>
+///     The result of a call to `DotnetRuntime.Select`.
+///     This is `type DotnetRuntimeSelection = | Framework of DotnetEnvironmentFrameworkInfo | Sdk of
+///     DotnetEnvironmentSdkInfo | Absent`.
+/// </summary>
+internal class DotnetRuntimeSelection
+{
+    private readonly int _discriminator;
+    private readonly DotnetEnvironmentFrameworkInfo? _framework;
+    private readonly DotnetEnvironmentSdkInfo? _sdk;
+
+    /// <summary>
+    ///     The constructor which means "We found the right runtime, and it's from this framework".
+    /// </summary>
+    /// <param name="framework">For example, </param>
+    public DotnetRuntimeSelection(DotnetEnvironmentFrameworkInfo framework)
+    {
+        _discriminator = 1;
+        _framework = framework;
+    }
+
+    /// <summary>
+    ///     The constructor which means "We found the right runtime, and it's from this SDK".
+    /// </summary>
+    /// <param name="sdk">For example, </param>
+    public DotnetRuntimeSelection(DotnetEnvironmentSdkInfo sdk)
+    {
+        _discriminator = 2;
+        _sdk = sdk;
+    }
+
+    /// <summary>
+    ///     The constructor which means "We were unable to find an appropriate runtime".
+    /// </summary>
+    public DotnetRuntimeSelection()
+    {
+        _discriminator = 3;
+    }
+
+    /// <summary>
+    ///     Exhaustive match on this discriminated union.
+    /// </summary>
+    /// <param name="withFramework">If `this` is a `Framework`, call this continuation with its value.</param>
+    /// <param name="withSdk">If `this` is a `Sdk`, call this continuation with its value.</param>
+    /// <param name="withNone">If `this` represents the absence of a result, call this continuation.</param>
+    /// <returns>The result of the continuation which was called.</returns>
+    public TRet Visit<TRet>(Func<DotnetEnvironmentFrameworkInfo, TRet> withFramework,
+        Func<DotnetEnvironmentSdkInfo, TRet> withSdk,
+        Func<TRet> withNone)
+    {
+        return _discriminator switch
+        {
+            1 => withFramework.Invoke(_framework!),
+            2 => withSdk.Invoke(_sdk!),
+            3 => withNone.Invoke(),
+            _ => throw new InvalidOperationException($"unrecognised union discriminator %i{_discriminator}")
+        };
+    }
+}
+
+/// <summary>
+///     Module to hold methods for automatically identifying a .NET runtime.
+/// </summary>
+public static class DotnetRuntime
+{
+    /// <returns>For each requested runtime in the RuntimeOptions, the resolved place in which to find that runtime.</returns>
+    private static IReadOnlyDictionary<string, DotnetRuntimeSelection> SelectRuntime(RuntimeOptions options,
+        DotnetEnvironmentInfo env)
+    {
+        var rollForwardEnvVar = Environment.GetEnvironmentVariable("DOTNET_ROLL_FORWARD");
+        RollForward rollForward;
+        if (rollForwardEnvVar == null)
+        {
+            rollForward = options.RollForward ?? RollForward.Minor;
+        }
+        else
+        {
+            if (!Enum.TryParse(rollForwardEnvVar, out rollForward))
+                throw new ArgumentException(
+                    $"Unable to parse the value of environment variable DOTNET_ROLL_FORWARD, which was: {rollForwardEnvVar}");
+        }
+
+        IReadOnlyDictionary<string, Version> desiredVersions;
+        if (options.IncludedFrameworks == null)
+        {
+            if (options.Framework == null)
+            {
+                if (options.Frameworks == null)
+                    throw new InvalidDataException(
+                        "Expected runtimeconfig.json file to have either a framework or frameworks entry, but it had neither");
+
+                desiredVersions = options.Frameworks.Select(x => (x.Name, new Version(x.Version))).GroupBy(x => x.Name)
+                    .Select(data =>
+                    {
+                        var versions = (IReadOnlyList<Version>)data.Select(datum => datum.Item2).ToList();
+                        if (versions.Count != 1)
+                        {
+                            var description = string.Join(", ", versions.Select(x => x.ToString()));
+                            throw new InvalidDataException(
+                                $"Unexpectedly had not-exactly-one version desired for framework {data.Key}: {description}");
+                        }
+
+                        return (data.Key, versions[0]);
+                    })
+                    .ToDictionary();
+            }
+            else
+            {
+                var result = new Dictionary<string, Version>
+                    { { options.Framework.Name, new Version(options.Framework.Version) } };
+                desiredVersions = result;
+            }
+        }
+        else
+        {
+            desiredVersions = options.IncludedFrameworks.Select(x => (x.Name, new Version(x.Version)))
+                .GroupBy(x => x.Name)
+                .Select(data =>
+                {
+                    var versions = (IReadOnlyList<Version>)data.Select(datum => datum.Item2).ToList();
+                    if (versions.Count != 1)
+                    {
+                        var description = string.Join(", ", versions.Select(x => x.ToString()));
+                        throw new InvalidDataException(
+                            $"Unexpectedly had not-exactly-one version desired for framework {data.Key}: {description}");
+                    }
+
+                    return (data.Key, versions[0]);
+                })
+                .ToDictionary();
+        }
+
+        IReadOnlyDictionary<string, IReadOnlyList<RuntimeOnDisk>> availableRuntimes = env
+            .Frameworks.SelectMany(availableFramework =>
+            {
+                var availableVersion = new Version(availableFramework.Version);
+                if (!desiredVersions.TryGetValue(availableFramework.Name, out var desiredVersion))
+                {
+                    // we don't desire this framework at any version; skip it
+                    return [];
+                }
+
+                if (availableVersion < desiredVersion)
+                {
+                    // It's never desired to roll *backward*.
+                    return [];
+                }
+                return new List<(string, DotnetEnvironmentFrameworkInfo)>
+                    { (availableFramework.Name, availableFramework) };
+            }).GroupBy(x => x.Item1)
+            .Select(group =>
+            {
+                var grouping = group.Select(x => new RuntimeOnDisk(x.Item2, new Version(x.Item2.Version))).ToList();
+                return (group.Key, (IReadOnlyList<RuntimeOnDisk>)grouping);
+            })
+            .ToDictionary();
+
+        switch (rollForward)
+        {
+            case RollForward.Minor:
+            {
+                return desiredVersions.Select(desired =>
+                {
+                    if (!availableRuntimes.TryGetValue(desired.Key, out var available))
+                    {
+                        return (desired.Key, new DotnetRuntimeSelection());
+                    }
+
+                    if (ReferenceEquals(available, null))
+                    {
+                        throw new NullReferenceException("logic error: contents of non-nullable dict can't be null");
+                    }
+
+                    // If there's a correct major and minor version, take the latest patch.
+                    var correctMajorAndMinorVersion =
+                        available.Where(data =>
+                            data.InstalledVersion.Major == desired.Value.Major &&
+                            data.InstalledVersion.Minor == desired.Value.Minor).ToList();
+                    if (correctMajorAndMinorVersion.Count > 0)
+                    {
+                        return (desired.Key, new DotnetRuntimeSelection(correctMajorAndMinorVersion.MaxBy(v => v.InstalledVersion)!.Installed));
+                    }
+
+                    // Otherwise roll forward to lowest higher minor version
+                    var candidate = available.Where(data => data.InstalledVersion.Major == desired.Value.Major)
+                        .MinBy(v => (v.InstalledVersion.Minor, -v.InstalledVersion.Build));
+
+                    return (desired.Key, candidate == null ? new DotnetRuntimeSelection() : new DotnetRuntimeSelection(candidate.Installed));
+                }).ToDictionary();
+            }
+            case RollForward.Major:
+            {
+                throw new NotImplementedException();
+            }
+            case RollForward.LatestPatch:
+            {
+                return desiredVersions.Select(desired =>
+                {
+                    var matches = availableRuntimes[desired.Key]
+                        .Where(data =>
+                            data.InstalledVersion.Minor == desired.Value.Minor &&
+                            data.InstalledVersion.Major == desired.Value.Major).MaxBy(data => data.InstalledVersion);
+                    return matches == null
+                        ? (desired.Key, new DotnetRuntimeSelection())
+                        : (desired.Key, new DotnetRuntimeSelection(matches.Installed));
+                }).ToDictionary();
+            }
+            case RollForward.LatestMinor:
+            {
+                return desiredVersions.Select(desired =>
+                {
+                    var matches = availableRuntimes[desired.Key]
+                        .Where(data =>
+                            data.InstalledVersion.Major == desired.Value.Major).MaxBy(data => data.InstalledVersion);
+                    return matches == null
+                        ? (desired.Key, new DotnetRuntimeSelection())
+                        : (desired.Key, new DotnetRuntimeSelection(matches.Installed));
+                }).ToDictionary();
+            }
+            case RollForward.LatestMajor:
+            {
+                return desiredVersions.Select(desired =>
+                {
+                    var match = availableRuntimes[desired.Key].MaxBy(data => data.InstalledVersion);
+                    return match == null ? (desired.Key, new DotnetRuntimeSelection()) : (desired.Key, new DotnetRuntimeSelection(match.Installed));
+                }).ToDictionary();
+            }
+            case RollForward.Disable:
+            {
+                return desiredVersions.Select(desired =>
+                    {
+                        var exactMatch = availableRuntimes[desired.Key]
+                            .FirstOrDefault(available => available.InstalledVersion == desired.Value);
+                        if (exactMatch != null)
+                        {
+                            return (desired.Key, new DotnetRuntimeSelection(exactMatch.Installed));
+                        }
+                        else
+                        {
+                            return (desired.Key, new DotnetRuntimeSelection());
+                        }
+                    }
+                ).ToDictionary();
+            }
+            default:
+            {
+                throw new ArgumentOutOfRangeException();
+            }
+        }
+    }
+
+    /// <summary>
+    ///     Given a .NET executable DLL, identify the most appropriate .NET runtime to run it.
+    ///     This is pretty half-baked at the moment; test this yourself to make sure it does what you want it to!
+    /// </summary>
+    /// <param name="dllPath">Path to an OutputType=Exe .dll file.</param>
+    /// <param name="dotnet">
+    ///     Path to the `dotnet` binary which you would use e.g. in `dotnet exec` to run the DLL specified by
+    ///     `dllPath`.
+    /// </param>
+    /// <returns>
+    ///     An ordered collection of folder paths. When resolving any particular DLL during the execution of the input
+    ///     DLL, search these folders; if a DLL name appears in multiple of these folders, the earliest is correct for that
+    ///     DLL.
+    /// </returns>
+    public static IReadOnlyList<string> SelectForDll(string dllPath, string? dotnet = null)
+    {
+        if (!dllPath.EndsWith(".dll", StringComparison.Ordinal))
+            throw new ArgumentException(
+                $"SelectForDll requires the input DLL to have the extension '.dll'; provided: {dllPath}");
+
+        var dll = new FileInfo(dllPath);
+        var dllParentDir = dll.Directory ?? throw new ArgumentException($"dll path {dllPath} had no parent");
+        var name = dll.Name.Substring(0, dll.Name.Length - ".dll".Length);
+
+        var configFilePath = Path.Combine(dllParentDir.FullName, $"{name}.runtimeconfig.json");
+
+        // It appears to be undocumented why this returns a nullable, and the Rider decompiler doesn't suggest there are
+        // any code paths where it can return null?
+        var runtimeConfig =
+            JsonSerializer.Deserialize<RuntimeConfig>(File.ReadAllText(configFilePath)) ??
+            throw new NullReferenceException($"Failed to parse contents of file {configFilePath} as a runtime config");
+
+        var availableRuntimes = dotnet == null
+            ? DotnetEnvironmentInfo.Get()
+            : DotnetEnvironmentInfo.GetSpecific(new FileInfo(dotnet));
+
+        var runtimes = SelectRuntime(runtimeConfig.RuntimeOptions, availableRuntimes);
+
+        return runtimes.SelectMany(runtime => runtime.Value.Visit(framework => new[] { $"{framework.Path}/{framework.Version}" },
+            sdk => [sdk.Path],
+            () => []
+        )).Prepend(dllParentDir.FullName).ToList();
+    }
+
+    private record RuntimeOnDisk(
+        DotnetEnvironmentFrameworkInfo Installed,
+        Version InstalledVersion);
+}

WoofWare.DotnetRuntimeLocator/RuntimeConfigOptions.cs

@@ -86,6 +86,12 @@ public record RuntimeOptions
     [JsonPropertyName("frameworks")]
     public IReadOnlyList<RuntimeConfigFramework>? Frameworks { get; init; }
 
+    /// <summary>
+    ///     This is a self-contained executable which has these framework entirely contained next to it.
+    /// </summary>
+    [JsonPropertyName("includedFrameworks")]
+    public IReadOnlyList<RuntimeConfigFramework>? IncludedFrameworks { get; init; }
+
     /// <summary>
     ///     This application advertises that it's fine with running under this roll-forward.
     /// </summary>

WoofWare.DotnetRuntimeLocator/SurfaceBaseline.txt

@@ -45,6 +45,8 @@ WoofWare.DotnetRuntimeLocator.DotnetEnvironmentSdkInfo.Path [property]: string
 WoofWare.DotnetRuntimeLocator.DotnetEnvironmentSdkInfo.set_Path [method]: string -> unit
 WoofWare.DotnetRuntimeLocator.DotnetEnvironmentSdkInfo.set_Version [method]: string -> unit
 WoofWare.DotnetRuntimeLocator.DotnetEnvironmentSdkInfo.Version [property]: string
+WoofWare.DotnetRuntimeLocator.DotnetRuntime inherit obj
+WoofWare.DotnetRuntimeLocator.DotnetRuntime.SelectForDll [static method]: (string, string) -> string System.Collections.Generic.IReadOnlyList
 WoofWare.DotnetRuntimeLocator.RollForward inherit System.Enum
 WoofWare.DotnetRuntimeLocator.RollForward.Disable [static field]: WoofWare.DotnetRuntimeLocator.RollForward = Disable
 WoofWare.DotnetRuntimeLocator.RollForward.LatestMajor [static field]: WoofWare.DotnetRuntimeLocator.RollForward = LatestMajor
@@ -79,13 +81,16 @@ WoofWare.DotnetRuntimeLocator.RuntimeOptions.Framework [property]: WoofWare.Dotn
 WoofWare.DotnetRuntimeLocator.RuntimeOptions.Frameworks [property]: WoofWare.DotnetRuntimeLocator.RuntimeConfigFramework System.Collections.Generic.IReadOnlyList
 WoofWare.DotnetRuntimeLocator.RuntimeOptions.get_Framework [method]: unit -> WoofWare.DotnetRuntimeLocator.RuntimeConfigFramework
 WoofWare.DotnetRuntimeLocator.RuntimeOptions.get_Frameworks [method]: unit -> WoofWare.DotnetRuntimeLocator.RuntimeConfigFramework System.Collections.Generic.IReadOnlyList
+WoofWare.DotnetRuntimeLocator.RuntimeOptions.get_IncludedFrameworks [method]: unit -> WoofWare.DotnetRuntimeLocator.RuntimeConfigFramework System.Collections.Generic.IReadOnlyList
 WoofWare.DotnetRuntimeLocator.RuntimeOptions.get_RollForward [method]: unit -> WoofWare.DotnetRuntimeLocator.RollForward System.Nullable
 WoofWare.DotnetRuntimeLocator.RuntimeOptions.get_Tfm [method]: unit -> string
+WoofWare.DotnetRuntimeLocator.RuntimeOptions.IncludedFrameworks [property]: WoofWare.DotnetRuntimeLocator.RuntimeConfigFramework System.Collections.Generic.IReadOnlyList
 WoofWare.DotnetRuntimeLocator.RuntimeOptions.op_Equality [static method]: (WoofWare.DotnetRuntimeLocator.RuntimeOptions, WoofWare.DotnetRuntimeLocator.RuntimeOptions) -> bool
 WoofWare.DotnetRuntimeLocator.RuntimeOptions.op_Inequality [static method]: (WoofWare.DotnetRuntimeLocator.RuntimeOptions, WoofWare.DotnetRuntimeLocator.RuntimeOptions) -> bool
 WoofWare.DotnetRuntimeLocator.RuntimeOptions.RollForward [property]: WoofWare.DotnetRuntimeLocator.RollForward System.Nullable
 WoofWare.DotnetRuntimeLocator.RuntimeOptions.set_Framework [method]: WoofWare.DotnetRuntimeLocator.RuntimeConfigFramework -> unit
 WoofWare.DotnetRuntimeLocator.RuntimeOptions.set_Frameworks [method]: WoofWare.DotnetRuntimeLocator.RuntimeConfigFramework System.Collections.Generic.IReadOnlyList -> unit
+WoofWare.DotnetRuntimeLocator.RuntimeOptions.set_IncludedFrameworks [method]: WoofWare.DotnetRuntimeLocator.RuntimeConfigFramework System.Collections.Generic.IReadOnlyList -> unit
 WoofWare.DotnetRuntimeLocator.RuntimeOptions.set_RollForward [method]: WoofWare.DotnetRuntimeLocator.RollForward System.Nullable -> unit
 WoofWare.DotnetRuntimeLocator.RuntimeOptions.set_Tfm [method]: string -> unit
 WoofWare.DotnetRuntimeLocator.RuntimeOptions.Tfm [property]: string

WoofWare.DotnetRuntimeLocator/Test/Test.fsproj

@@ -8,6 +8,7 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <Compile Include="TestDotnetRuntime.fs" />
     <Compile Include="TestRuntimeConfigParse.fs"/>
     <Compile Include="TestSurface.fs"/>
     <Compile Include="TestDotnetEnvironmentInfo.fs"/>

WoofWare.DotnetRuntimeLocator/Test/TestDotnetRuntime.fs

@@ -0,0 +1,36 @@
+namespace WoofWare.DotnetRuntimeLocator.Test
+
+open System.IO
+open System.Reflection
+open NUnit.Framework
+open WoofWare.DotnetRuntimeLocator
+
+[<TestFixture>]
+module TestDotnetRuntime =
+
+    let inline shouldBeSome (x : 'a option) : unit =
+        match x with
+        | None -> failwith "option was None"
+        | Some _ -> ()
+
+    let inline shouldBeNone (x : 'a option) : unit =
+        match x with
+        | Some x -> failwith $"expectd None, but option was Some %O{x}"
+        | None -> ()
+
+    [<Test>]
+    let ``Test DotnetRuntime`` () =
+        let assy = Assembly.GetExecutingAssembly ()
+        let selectedRuntime = DotnetRuntime.SelectForDll assy.Location
+
+        let existsDll (name : string) =
+            selectedRuntime
+            |> Seq.tryPick (fun dir ->
+                let attempt = Path.Combine (dir, name)
+                if File.Exists attempt then Some attempt else None
+            )
+
+        existsDll "System.Private.CoreLib.dll" |> shouldBeSome
+        existsDll "System.Text.Json.dll" |> shouldBeSome
+        existsDll "Test.dll" |> shouldBeSome
+        existsDll "blah-de-blah.dll" |> shouldBeNone

WoofWare.DotnetRuntimeLocator/Test/TestSurface.fs

@@ -18,6 +18,7 @@ module TestSurface =
     let ``Ensure public API is fully documented`` () =
         DocCoverage.assertFullyDocumented assembly
 
-    [<Test ; Explicit "Not yet published">]
+    [<Test>]
-    let ``Ensure version is monotonic`` () =
+    // https://github.com/nunit/nunit3-vs-adapter/issues/876
+    let ``EnsureVersionIsMonotonic`` () =
         MonotonicVersion.validate assembly "WoofWare.DotnetRuntimeLocator"

WoofWare.DotnetRuntimeLocator/WoofWare.DotnetRuntimeLocator.csproj

@@ -23,6 +23,7 @@
     <Compile Include="DotnetEnvironmentFrameworkInfo.cs"/>
     <Compile Include="DotnetEnvironmentInfo.cs"/>
     <Compile Include="DotnetEnvironmentSdkInfo.cs"/>
+    <Compile Include="DotnetRuntime.cs" />
     <Compile Include="InteropStructs.cs"/>
     <Compile Include="Boilerplate.cs"/>
     <Compile Include="RuntimeConfigOptions.cs"/>

WoofWare.DotnetRuntimeLocator/version.json

@@ -1,5 +1,5 @@
 {
-  "version": "0.2",
+  "version": "0.3",
   "publicReleaseRefSpec": [
     "^refs/heads/main$"
   ],

flake.nix

@@ -48,10 +48,11 @@
         fantomas = dotnetTool null "fantomas" (builtins.fromJSON (builtins.readFile ./.config/dotnet-tools.json)).tools.fantomas.version (builtins.head (builtins.filter (elem: elem.pname == "fantomas") deps)).hash;
         default = pkgs.buildDotnetModule {
           inherit pname version dotnet-sdk dotnet-runtime;
-          name = "WoofWare.Myriad.Plugins";
+          name = "WoofWare.DotnetRuntimeLocator";
           src = ./.;
           projectFile = "./WoofWare.DotnetRuntimeLocator/WoofWare.DotnetRuntimeLocator.csproj";
           testProjectFile = "./WoofWare.DotnetRuntimeLocator/Test/Test.fsproj";
+          disabledTests = ["WoofWare.DotnetRuntimeLocator.Test.TestSurface.EnsureVersionIsMonotonic"];
           nugetDeps = ./nix/deps.json; # `nix build .#default.fetch-deps && ./result nix/deps.json`
           doCheck = true;
         };