AtwoodTM · Sep 26, 2026 · Sep 26, 2026
@@ -4,13 +4,20 @@ Each release has a `## [version]` section. When a `v*.*.*` tag is pushed, the Pu
 
 ## [Unreleased]
 
+## [7.0.0]
+
+### Breaking
+
+- The Dynamitey dependency is [Dynamitey.Community 4.0.0](https://www.nuget.org/packages/Dynamitey.Community/4.0.0). The `Dynamitey` package id stays at 3.0.3. The namespace is still `Dynamitey`. The assembly name is `Dynamitey.Community`. `Dyn.namedArg`, `Dyn.staticContext`, and `Dyn.staticTarget` return types from that assembly. A project that also references `Dynamitey` 3.0.3 gets `CS0433`. Target frameworks stay `netstandard2.0` and `net10.0` (#130).
+
 ### Fixed
 
 - `Dyn.tryGet` and `Dyn.exists` on a null target return `None` and `false`. `Dyn.explicitConvert` and `explicitConvertTo` of null follow `implicitConvert` (null for a reference result type; a value type still fails). `Dyn.set` on a null target still throws `NullReferenceException` (#111).
+- Calls with 15 or more arguments no longer throw `TypeLoadException` from Dynamitey 3.0.3. That call site is fixed in Dynamitey.Community 4.0.0.
 
 ### Docs
 
-- Caveats document 15-argument `TypeLoadException`, C# optional parameters, and `tryGet` / `exists` on a null target (#110).
+- Caveats document 15-argument `TypeLoadException` on 6.0.0, C# optional parameters, and `tryGet` / `exists` on a null target (#110, #111, #130).
 - Copilot leftovers from the 6.0.0 docs pass: why.md examples, operators void `Add`, release checklist, XML docs for `Direct` / `!?` / Operators, DocFX theme alerts and link RGB, SECURITY.md triggers, VS Code task, changelog wording (#114–#126).
 
 ## [6.0.0]

@@ -45,6 +45,6 @@ docfx docfx/docfx.json --warningsAsErrors
 
 PRs build the site; only `master` deploys to GitHub Pages.
 
-## `netstandard2.0` is deliberate
+## `netstandard2.0` stays through 7.0.0
 
-It is the TFM that still reaches .NET Framework and modern .NET from one package. Do not drop it to "simplify" to `net10.0` only.
+It is the TFM that still reaches .NET Framework and modern .NET from one package. 7.0.0 keeps it. The dependency is Dynamitey.Community 4.0.0. Dropping `netstandard2.0` is 8.0.0 ([#108](https://github.com/fsprojects/FSharp.Interop.Dynamic/issues/108)), later in 2026, when the targets become `net10.0` and `net11.0`. Do not drop it in a 7.x change.
@@ -7,8 +7,8 @@
     <EmbedUntrackedSources>true</EmbedUntrackedSources>
     <RepositoryUrl>https://github.com/fsprojects/FSharp.Interop.Dynamic.git</RepositoryUrl>
     <RepositoryType>git</RepositoryType>
-    <!-- Next release is 6.0.0: net45 and netstandard1.6 were dropped. -->
-    <VersionPrefix>6.0.0</VersionPrefix>
+    <!-- 7.0.0 switches the dependency to Dynamitey.Community 4.0.0. Target frameworks stay netstandard2.0 and net10.0. -->
+    <VersionPrefix>7.0.0</VersionPrefix>
 
     <!-- SDK Roslyn analyzers (CA*). F# has no C# AST, so Roslynator/Sonar C#
          would be silent; these IL-level rules still fire. -->

@@ -4,7 +4,7 @@
   </PropertyGroup>
   <ItemGroup>
     <PackageVersion Include="coverlet.MTP" Version="10.0.1" />
-    <PackageVersion Include="Dynamitey" Version="3.0.3" />
+    <PackageVersion Include="Dynamitey.Community" Version="4.0.0" />
     <PackageVersion Include="FSharp.Analyzers.Build" Version="0.5.0" />
     <PackageVersion Include="FsCheck" Version="3.4.0" />
     <!-- FSharp.Core is the library's published dependency floor, so keep it

@@ -18,7 +18,7 @@
 
   <ItemGroup>
     <PackageReference Include="FSharp.Core" />
-    <PackageReference Include="Dynamitey" />
+    <PackageReference Include="Dynamitey.Community" />
     <PackageReference Include="Microsoft.CSharp" />
     <PackageReference Include="FSharp.Analyzers.Build">
       <PrivateAssets>all</PrivateAssets>

@@ -2,13 +2,14 @@
   "version": 2,
   "dependencies": {
     ".NETStandard,Version=v2.0": {
-      "Dynamitey": {
+      "Dynamitey.Community": {
         "type": "Direct",
-        "requested": "[3.0.3, )",
-        "resolved": "3.0.3",
-        "contentHash": "ocF4rRKgnmBkblk8RrgRP9YxxeJBvoaoCNLXgmUMgQCjZRw2v6Rtqxt5Kni6/TtbvICeWVN9X/69G5jltUEnbQ==",
+        "requested": "[4.0.0, )",
+        "resolved": "4.0.0",
+        "contentHash": "avIRAxvTkk75sMTg7e8atijRshqDlZgjIj7p2eBWW9MnfY9f6Mtb8hbcEc+2Km5gYZLefASI5Hc7tIUoMNH+ng==",
         "dependencies": {
-          "Microsoft.CSharp": "4.7.0"
+          "Microsoft.CSharp": "4.7.0",
+          "System.Reflection.Emit": "4.7.0"
         }
       },
       "FSharp.Analyzers.Build": {
@@ -48,14 +49,27 @@
         "type": "Transitive",
         "resolved": "1.1.0",
         "contentHash": "kz0PEW2lhqygehI/d6XsPCQzD7ff7gUJaVGPVETX611eadGsA3A877GdSlU0LRVMCTH/+P3o2iDTak+S08V2+A=="
+      },
+      "System.Reflection.Emit": {
+        "type": "Transitive",
+        "resolved": "4.7.0",
+        "contentHash": "VR4kk8XLKebQ4MZuKuIni/7oh+QGFmZW3qORd1GvBq/8026OpW501SzT/oypwiQl4TvT8ErnReh/NzY9u+C6wQ==",
+        "dependencies": {
+          "System.Reflection.Emit.ILGeneration": "4.7.0"
+        }
+      },
+      "System.Reflection.Emit.ILGeneration": {
+        "type": "Transitive",
+        "resolved": "4.7.0",
+        "contentHash": "AucBYo3DSI0IDxdUjKksBcQJXPHyoPyrCXYURW1WDsLI4M65Ar/goSHjdnHOAY9MiYDNKqDlIgaYm+zL2hA1KA=="
       }
     },
     "net10.0": {
-      "Dynamitey": {
+      "Dynamitey.Community": {
         "type": "Direct",
-        "requested": "[3.0.3, )",
-        "resolved": "3.0.3",
-        "contentHash": "ocF4rRKgnmBkblk8RrgRP9YxxeJBvoaoCNLXgmUMgQCjZRw2v6Rtqxt5Kni6/TtbvICeWVN9X/69G5jltUEnbQ=="
+        "requested": "[4.0.0, )",
+        "resolved": "4.0.0",
+        "contentHash": "avIRAxvTkk75sMTg7e8atijRshqDlZgjIj7p2eBWW9MnfY9f6Mtb8hbcEc+2Km5gYZLefASI5Hc7tIUoMNH+ng=="
       },
       "FSharp.Analyzers.Build": {
         "type": "Direct",

@@ -13,19 +13,23 @@ F# operators for the Dynamic Language Runtime. `target?Name`, `target?Name <- va
 
 **Docs:** [fsprojects.github.io/FSharp.Interop.Dynamic](https://fsprojects.github.io/FSharp.Interop.Dynamic/)
 
-This library sits on [Dynamitey](https://www.nuget.org/packages/Dynamitey/) 3.0.3. It is the F# surface, not Dynamitey itself.
+This library sits on [Dynamitey.Community](https://www.nuget.org/packages/Dynamitey.Community/) 4.0.0. It is the F# surface, not Dynamitey itself.
 
 F# has no `dynamic` keyword. Use this when the member is not known at compile time: Expando/JSON bags, optional fields, method names from config, C# APIs that return `dynamic`, pythonnet, COM. Use ordinary F# when the type is in your project. Full argument: [Why this library](https://fsprojects.github.io/FSharp.Interop.Dynamic/docs/why.html).
 
 ---
 
 ## Version story
 
-**6.0.0** is the current package: `netstandard2.0` + `net10.0`, `Dyn.tryGet` / `Dyn.exists`. That is a TFM break from **5.0.1.268** (`net45` / `netstandard1.6` / `netstandard2.0`). `netstandard2.0` still covers current .NET Framework and .NET.
+**7.0.0** is the current package: `netstandard2.0` + `net10.0`, [Dynamitey.Community 4.0.0](https://www.nuget.org/packages/Dynamitey.Community/4.0.0). The namespace is still `Dynamitey`. The assembly is `Dynamitey.Community`. `Dyn.namedArg`, `Dyn.staticContext`, and `Dyn.staticTarget` return types from that assembly. A project that also references the `Dynamitey` 3.0.3 package gets `CS0433`.
+
+**6.0.0** was `netstandard2.0` + `net10.0` on Dynamitey 3.0.3, with `Dyn.tryGet` / `Dyn.exists`. That was a TFM break from **5.0.1.268** (`net45` / `netstandard1.6` / `netstandard2.0`). `netstandard2.0` still covers current .NET Framework and .NET.
+
+**8.0.0**, later in 2026, drops `netstandard2.0` and targets `net10.0` + `net11.0` ([#108](https://github.com/fsprojects/FSharp.Interop.Dynamic/issues/108)).
 
 ---
 
-## Install (6.0.0)
+## Install (7.0.0)
 
 ```bash
 dotnet add package FSharp.Interop.Dynamic
@@ -116,7 +120,7 @@ More: [Operators](https://fsprojects.github.io/FSharp.Interop.Dynamic/docs/opera
 
 ## Dynamitey
 
-6.0.0 references **Dynamitey 3.0.3**. `tryGet` / `exists` do not wait on Dynamitey 4.0.0. The community continuation of Dynamitey is [dynamitey-community/dynamitey](https://github.com/dynamitey-community/dynamitey); switching this package to it is [#29](https://github.com/fsprojects/FSharp.Interop.Dynamic/issues/29).
+7.0.0 references [**Dynamitey.Community 4.0.0**](https://www.nuget.org/packages/Dynamitey.Community/4.0.0), from [dynamitey-community/dynamitey](https://github.com/dynamitey-community/dynamitey). The `Dynamitey` package id stopped at 3.0.3 on 8 November 2023. The namespace is still `Dynamitey`. More: [Dynamitey](https://fsprojects.github.io/FSharp.Interop.Dynamic/docs/dynamitey.html).
 
 You can still `open Dynamitey` for `Build`, `Dynamic.Curry`, `DynamicObjects.Dictionary`.
 
@@ -126,7 +130,7 @@ You can still `open Dynamitey` for `Build`, `Dynamic.Curry`, `DynamicObjects.Dic
 
 - The DLR cannot see **explicit interface members** (same as C# `dynamic`).
 - **Not trim-safe or NativeAOT-safe.**
-- **15 or more arguments** throw `TypeLoadException` (ImpromptuInterface was never shipped). Fourteen work.
+- **15 or more arguments** threw `TypeLoadException` on 6.0.0 (Dynamitey 3.0.3). 7.0.0 takes the fix in Dynamitey.Community 4.0.0.
 - **C# optional parameters** must all be passed. The DLR does not fill defaults.
 - `tryGet` / `exists` on a **null target** are `None` / `false`. `Dyn.set` on a null target still throws `NullReferenceException`.
 - Do not build member names from untrusted input. [SECURITY.md](SECURITY.md).
@@ -152,7 +156,7 @@ dotnet test --project Tests/Tests.fsproj -c Release
 
 Docs: `dotnet tool install -g docfx --version 2.78.5`, then `dotnet build FSharp.Interop.Dynamic/FSharp.Interop.Dynamic.fsproj -c Release && docfx docfx/docfx.json`.
 
-Release: add the version's section to [CHANGELOG.md](CHANGELOG.md), then tag `v6.0.0` and push. [Releasing](https://fsprojects.github.io/FSharp.Interop.Dynamic/docs/releasing.html).
+Release: add the version's section to [CHANGELOG.md](CHANGELOG.md), then tag `v7.0.0` and push. [Releasing](https://fsprojects.github.io/FSharp.Interop.Dynamic/docs/releasing.html).
 
 ---
 

@@ -12,6 +12,10 @@ open Microsoft.CSharp.RuntimeBinder
 type Echo() =
     member _.Of<'T>(x: 'T) = x
 
+type AddFifteen() =
+    member _.Sum(a: int, b: int, c: int, d: int, e: int, f: int, g: int, h: int, i: int, j: int, k: int, l: int, m: int, n: int, o: int) =
+        a + b + c + d + e + f + g + h + i + j + k + l + m + n + o
+
 type Touch() =
     member val Called = false with get, set
     member this.Go() = this.Called <- true
@@ -155,4 +159,9 @@ module Invocation =
     [<Fact>]
     let ``a throwing getter is not wrapped after a binder failure`` () =
         (fun () -> PropThrows() |> Dyn.invokeMember "Bad" () |> ignore)
-        |> should throw typeof<InvalidOperationException>
+        |> should throw typeof<InvalidOperationException>
+
+    [<Fact>]
+    let ``fifteen arguments do not throw TypeLoadException`` () =
+        let n: int = AddFifteen() |> Dyn.invokeMember "Sum" (1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1)
+        n |> should equal 15
@@ -267,15 +267,15 @@
       "fsharp.interop.dynamic": {
         "type": "Project",
         "dependencies": {
-          "Dynamitey": "[3.0.3, )",
+          "Dynamitey.Community": "[4.0.0, )",
           "FSharp.Core": "[4.7.2, )"
         }
       },
-      "Dynamitey": {
+      "Dynamitey.Community": {
         "type": "CentralTransitive",
-        "requested": "[3.0.3, )",
-        "resolved": "3.0.3",
-        "contentHash": "ocF4rRKgnmBkblk8RrgRP9YxxeJBvoaoCNLXgmUMgQCjZRw2v6Rtqxt5Kni6/TtbvICeWVN9X/69G5jltUEnbQ=="
+        "requested": "[4.0.0, )",
+        "resolved": "4.0.0",
+        "contentHash": "avIRAxvTkk75sMTg7e8atijRshqDlZgjIj7p2eBWW9MnfY9f6Mtb8hbcEc+2Km5gYZLefASI5Hc7tIUoMNH+ng=="
       }
     }
   }

@@ -24,7 +24,7 @@ Annotate `'T` / `unit` so the binder and the conversion agree.
 
 ## More than 14 arguments
 
-A call with **15 or more** arguments throws `TypeLoadException: Cannot Emit long delegates without ImpromptuInterface installed`. Fourteen arguments work. Dynamitey 3.0.3 never shipped ImpromptuInterface with this package. A fix belongs in a newer Dynamitey, not in a vendor here ([#29](https://github.com/fsprojects/FSharp.Interop.Dynamic/issues/29)).
+On 6.0.0 a call with **15 or more** arguments threw `TypeLoadException: Cannot Emit long delegates without ImpromptuInterface installed`. Fourteen arguments worked. Dynamitey 3.0.3 never declared the package that path needed. Dynamitey.Community 4.0.0 builds that call site, and 7.0.0 takes that package.
 
 ## C# optional parameters
 

@@ -1,21 +1,27 @@
 # Dynamitey
 
-This library is an F# façade over [Dynamitey](https://www.nuget.org/packages/Dynamitey/). 6.0.0 references **Dynamitey 3.0.3** — the last upstream release. It does not need Dynamitey 4.0.0 to ship.
+This library is an F# façade over Dynamitey. 7.0.0 references [**Dynamitey.Community 4.0.0**](https://www.nuget.org/packages/Dynamitey.Community/4.0.0). 6.0.0 referenced **Dynamitey 3.0.3**, the last release from [ekonbenefits/dynamitey](https://github.com/ekonbenefits/dynamitey), published 8 November 2023.
 
 ## What each project is
 
 | | Dynamitey | FSharp.Interop.Dynamic |
 | --- | --- | --- |
 | Language | C# | F# |
-| Package | `Dynamitey` 3.0.3 on nuget.org | `FSharp.Interop.Dynamic` |
-| Continuation | [dynamitey-community/dynamitey](https://github.com/dynamitey-community/dynamitey) (4.0.0 not published yet) | this repo, `fsprojects` |
+| Package | [`Dynamitey.Community` 4.0.0](https://www.nuget.org/packages/Dynamitey.Community/4.0.0). The `Dynamitey` id is still 3.0.3 | `FSharp.Interop.Dynamic` 7.0.0 |
+| Source | [dynamitey-community/dynamitey](https://github.com/dynamitey-community/dynamitey) | this repo, `fsprojects` |
 | You write | `Dynamic.InvokeGet(o, "Name")` | `o?Name` / `o |> Dyn.get "Name"` |
 
 The F# operators call `Dynamic.InvokeGet`, `InvokeSet`, `InvokeMember`, `InvokeConvert`, and friends. Named arguments are Dynamitey `InvokeArg`. Static calls use Dynamitey `InvokeContext`.
 
 ## 4.0.0
 
-The community continuation targets `netstandard2.0` + `net10.0` and is ready as Dynamitey 4.0.0. Until that package exists on nuget.org, this library stays on 3.0.3. Switching the package reference is [#29](https://github.com/fsprojects/FSharp.Interop.Dynamic/issues/29). `tryGet` / `exists` already work on 3.0.3 because they use `InvokeGet`.
+Jay Tuley wrote Dynamitey. The `Dynamitey` package id stopped at 3.0.3. The continuation publishes `Dynamitey.Community`, so both can be on nuget.org. The namespace is still `Dynamitey`, so `open Dynamitey` stays. The assembly name is `Dynamitey.Community`.
+
+4.0.0 targets `netstandard2.0` and `net10.0`, the same pair as this library. `net40` is dropped. 4.0.0 is the last release of that package that still targets `netstandard2.0`. The release notes are [About 4.0.0](https://dynamitey-community.github.io/dynamitey/docs/v4.html).
+
+`Dyn.namedArg`, `Dyn.staticContext`, and `Dyn.staticTarget` return `InvokeArg` and `InvokeContext` from that assembly. A project that also references `Dynamitey` 3.0.3 fails to compile with `CS0433`. ImpromptuInterface still references the original package. How to alias that is in the [community readme](https://github.com/dynamitey-community/dynamitey#if-you-end-up-with-both-packages).
+
+Dropping `netstandard2.0` here is **8.0.0** ([#108](https://github.com/fsprojects/FSharp.Interop.Dynamic/issues/108)), later in 2026. [#29](https://github.com/fsprojects/FSharp.Interop.Dynamic/issues/29) was the older ticket. It is closed. The switch is [#130](https://github.com/fsprojects/FSharp.Interop.Dynamic/issues/130).
 
 ## Do not take a compile-time dependency on Dynamitey internals
 

@@ -3,14 +3,14 @@
 ## Installing
 
 > [!IMPORTANT]
-> Install **6.0.0** (`netstandard2.0` + `net10.0`). **5.0.1.268** is the previous TFM set (`net45` / `netstandard1.6` / `netstandard2.0`).
+> Install **7.0.0** (`netstandard2.0` + `net10.0`, Dynamitey.Community 4.0.0). **6.0.0** was the same target frameworks on Dynamitey 3.0.3. **5.0.1.268** is the previous TFM set (`net45` / `netstandard1.6` / `netstandard2.0`).
 
 ```bash
 dotnet add package FSharp.Interop.Dynamic
 ```
 
 ```xml
-<PackageReference Include="FSharp.Interop.Dynamic" Version="6.0.0" />
+<PackageReference Include="FSharp.Interop.Dynamic" Version="7.0.0" />
 ```
 
 ```fsharp

@@ -4,7 +4,9 @@ NuGet publish is tag-triggered. The workflow is `.github/workflows/publish.yml`.
 
 ## Version
 
-`VersionPrefix` is **6.0.0**. That was the TFM break (`net45` / `netstandard1.6` dropped). The next release is `v6.0.1` (or `v6.1.0` / `v7.0.0`), not another 5.x.
+`VersionPrefix` is **7.0.0**. That release switches the dependency to Dynamitey.Community 4.0.0. Target frameworks stay `netstandard2.0` and `net10.0`.
+
+**8.0.0**, later in 2026, drops `netstandard2.0` and targets `net10.0` and `net11.0` ([#108](https://github.com/fsprojects/FSharp.Interop.Dynamic/issues/108)). Not another 5.x.
 
 ## Cut a release
 
@@ -38,4 +40,4 @@ Pull requests never publish.
 
 ## After it lands
 
-Confirm nuget.org lists the new version and that README / getting-started install instructions match it. The next version after 6.0.0 is `v6.0.1` (or `v6.1.0` / `v7.0.0`), not another 5.x.
+Confirm nuget.org lists the new version and that README / getting-started install instructions match it. After 7.0.0, the next planned major is 8.0.0 (drop `netstandard2.0`). Not another 5.x.
@@ -2,7 +2,7 @@
 
 [#27](https://github.com/fsprojects/FSharp.Interop.Dynamic/issues/27): unstructured objects, check `o?myProp` without eating a `RuntimeBinderException`.
 
-These ship on Dynamitey **3.0.3**. They do not need Dynamitey 4.0.0.
+These call `InvokeGet`. In 7.0.0 that call goes to Dynamitey.Community 4.0.0.
 
 ## `Dyn.tryGet`
 

@@ -7,10 +7,10 @@ title: FSharp.Interop.Dynamic
 
 F# operators and helpers for the Dynamic Language Runtime. `target?Name`, `target?Name<-value`, and `!?target` do what C#'s `dynamic` keyword does, with F# inference and piping.
 
-This is the fsprojects library that sits on [Dynamitey](https://www.nuget.org/packages/Dynamitey/) 3.0.3. It is not Dynamitey itself; it is the F# surface.
+This is the fsprojects library that sits on [Dynamitey.Community](https://www.nuget.org/packages/Dynamitey.Community/) 4.0.0. It is not Dynamitey itself; it is the F# surface.
 
 > [!IMPORTANT]
-> **6.0.0** is the current package (`netstandard2.0` and `net10.0`). **5.0.1.268** was the last package that still targeted `net45` / `netstandard1.6`.
+> **7.0.0** is the current package (`netstandard2.0` and `net10.0`, Dynamitey.Community 4.0.0). **6.0.0** was the same target frameworks on Dynamitey 3.0.3. **5.0.1.268** was the last package that still targeted `net45` / `netstandard1.6`.
 
 ## Where to start
 
@@ -23,7 +23,7 @@ This is the fsprojects library that sits on [Dynamitey](https://www.nuget.org/pa
 | Check a member without throwing | [tryGet and exists](docs/tryget.md) |
 | Dynamic `+`, `*`, comparisons | [Binary operators](docs/binary-operators.md) |
 | Turn a quotation into a member name | [Quotations](docs/quotations.md) |
-| How this relates to Dynamitey 3.0.3 / 4.0.0 | [Dynamitey](docs/dynamitey.md) |
+| How this relates to Dynamitey.Community 4.0.0 | [Dynamitey](docs/dynamitey.md) |
 | What the DLR will not do | [Caveats](docs/caveats.md) |
 | Cut a NuGet release | [Releasing](docs/releasing.md) |
 | Look up a specific type or member | [API reference](api/index.md) |
@@ -54,7 +54,7 @@ Reach for ordinary F# when the member is known at compile time. Reach for this l
 
 ## Supported frameworks
 
-`netstandard2.0` and `net10.0`. The `netstandard2.0` target is kept deliberately — it is the only target reaching both .NET Framework 4.6.2+ and modern .NET from a single package. 6.0.0 dropped `net45` and `netstandard1.6`.
+`netstandard2.0` and `net10.0`. `netstandard2.0` still reaches .NET Framework 4.6.2+ and modern .NET from one package. 6.0.0 dropped `net45` and `netstandard1.6`. 7.0.0 keeps these targets and references Dynamitey.Community 4.0.0. 8.0.0, later in 2026, drops `netstandard2.0` and targets `net10.0` and `net11.0` ([#108](https://github.com/fsprojects/FSharp.Interop.Dynamic/issues/108)).
 
 ## A word on trimming and AOT