fsharp 🚀 - Cannot do anything with `dotnet fsi` in .NET Core 3.1 preview

Did a bit of testing on preview two this morning:

Debian 9 with 3.1.100 preview 2 can execute the above interaction
Mac OS Mojave with 3.1.100 preview 2 _cannot_ execute the above interaction. I can't even declare simple bindings:

> let m = 10m;;


error FS0193: Could not load file or assembly '"The system type 'System.Runtime.CompilerServices.CompilerGeneratedAttribute' was required but no referenced system DLL contained this type", Culture=neutral, PublicKeyToken=null'. The system cannot find the file specified.

baronfel on 4 Nov 2019

I just installed the most recent builds of 3.1.100-preview2-014569, 3.1.100-Preview3 and 5.0 from the dotnet cli site:
all worked for me on. I will update to catalina, and see how it goes.

MacOS Mojave 10.14.6
````

Welcome to .NET Core 3.1!

SDK Version: 3.1.100-preview2-014569

Telemetry

The .NET Core tools collect usage data in order to help us improve your experience. The data is anonymous. It is collected by Microsoft and shared with the community. You can opt-out of telemetry by setting the DOTNET_CLI_TELEMETRY_OPTOUT environment variable to '1' or 'true' using your favorite shell.

Read more about .NET Core CLI Tools telemetry: https://aka.ms/dotnet-cli-telemetry

Explore documentation: https://aka.ms/dotnet-docs
Report issues and find source on GitHub: https://github.com/dotnet/core
Find out what's new: https://aka.ms/dotnet-whats-new
Learn about the installed HTTPS developer cert: https://aka.ms/aspnet-core-https
Use 'dotnet --help' to see available commands or visit: https://aka.ms/dotnet-cli-docs

Write your first app: https://aka.ms/first-net-core-app

For help type #help;;

2+2;;
val it : int = 4

Kevins-MBP:~/temp/xps>dotnet fsi

Welcome to .NET Core 3.1!

SDK Version: 3.1.100-preview3-014639

Telemetry

The .NET Core tools collect usage data in order to help us improve your experience. The data is anonymous. It is collected by Microsoft and shared with the community. You can opt-out of telemetry by setting the DOTNET_CLI_TELEMETRY_OPTOUT environment variable to '1' or 'true' using your favorite shell.

Read more about .NET Core CLI Tools telemetry: https://aka.ms/dotnet-cli-telemetry

Explore documentation: https://aka.ms/dotnet-docs
Report issues and find source on GitHub: https://github.com/dotnet/core
Find out what's new: https://aka.ms/dotnet-whats-new
Learn about the installed HTTPS developer cert: https://aka.ms/aspnet-core-https
Use 'dotnet --help' to see available commands or visit: https://aka.ms/dotnet-cli-docs

Write your first app: https://aka.ms/first-net-core-app

For help type #help;;

2+2;;
val it : int = 4

cc
and ...
Kevins-MBP:~/temp/xps>dotnet fsi

Welcome to .NET Core 5.0!

SDK Version: 5.0.100-alpha1-015580

Telemetry

The .NET Core tools collect usage data in order to help us improve your experience. The data is anonymous. It is collected by Microsoft and shared with the community. You can opt-out of telemetry by setting the DOTNET_CLI_TELEMETRY_OPTOUT environment variable to '1' or 'true' using your favorite shell.

Read more about .NET Core CLI Tools telemetry: https://aka.ms/dotnet-cli-telemetry

Installed an ASP.NET Core HTTPS development certificate.
To trust the certificate run 'dotnet dev-certs https --trust' (Windows and macOS only).

Learn about HTTPS: https://aka.ms/dotnet-https

Write your first app: https://aka.ms/dotnet-hello-world
Find out what's new: https://aka.ms/dotnet-whats-new
Explore documentation: https://aka.ms/dotnet-docs
Report issues and find source on GitHub: https://github.com/dotnet/core

Use 'dotnet --help' to see available commands or visit: https://aka.ms/dotnet-cli

For help type #help;;

Failed to install ctrl-c handler - Ctrl-C handling will not be available. Error was:
Could not load file or assembly 'Mono.Posix, Version=2.0.0.0, Culture=neutral, PublicKeyToken=0738eb9f132ed756'. The system cannot find the file specified.

2+2;;
val it : int = 4

````

KevinRansom on 5 Nov 2019

With Catalina

````
Last login: Mon Nov 4 20:16:30 on console

The default interactive shell is now zsh.
To update your account to use zsh, please run chsh -s /bin/zsh.
For more details, please visit https://support.apple.com/kb/HT208050.
Kevins-MBP:~ kevinr$ dotnet fsi
-bash: dotnet: command not found
Kevins-MBP:~ kevinr$ dotnet fsi

For help type #help;;

2+2;;
val it : int = 4

````

KevinRansom on 5 Nov 2019

@cartermp , if this still fails on your macbook, could I take a look please mate.

KevinRansom on 5 Nov 2019

Related to #7369

I'm seeing this on and off with preview builds in all platforms. Probably not fsharp related, similar errors are popping up in omnisharp.

eiriktsarpalis on 6 Nov 2019

@KevinRansom this reproduces with the latest .NET Core 3 preview:

cartermp on 14 Nov 2019

@cartermp I left my MacBook at home, I can try when I get home, if you are going to be in today, could I look at it on your macbook?

thanks

Kevin

KevinRansom on 14 Nov 2019

I'm not in the office today still due to illness. These are my OS specs:

cartermp on 14 Nov 2019

Still works for me
@cartermp , I am going to need to look at your machine, see if I can figure out whats up.
System Software Overview:

````
System Version: macOS 10.15.1 (19B88)
Kernel Version: Darwin 19.0.0
Boot Volume: MacBook HD
Boot Mode: Normal
Computer Name: Kevin’s MacBook Pro
User Name: Kevin Ransom (kevinr)
Secure Virtual Memory: Enabled
System Integrity Protection: Enabled
Time since boot: 9 days 20:41

````

````
Kevins-MBP:kevinransom kevinr$ dotnet

Usage: dotnet [options]
Usage: dotnet [path-to-application]

Options:
-h|--help Display help.
--info Display .NET Core information.
--list-sdks Display the installed SDKs.
--list-runtimes Display the installed runtimes.

path-to-application:
The path to an application .dll file to execute.
Kevins-MBP:kevinransom kevinr$ dotnet --info
.NET Core SDK (reflecting any global.json):
Version: 3.1.100-preview3-014639
Commit: c46588ae63

Runtime Environment:
OS Name: Mac OS X
OS Version: 10.15
OS Platform: Darwin
RID: osx.10.15-x64
Base Path: /usr/local/share/dotnet/sdk/3.1.100-preview3-014639/

Host (useful for support):
Version: 3.1.0-preview3.19553.2
Commit: 13f35c3d86

.NET Core SDKs installed:
3.1.100-preview3-014639 [/usr/local/share/dotnet/sdk]

.NET Core runtimes installed:
Microsoft.AspNetCore.App 3.1.0-preview3.19554.4 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.NETCore.App 3.1.0-preview3.19553.2 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]

To install additional .NET Core runtimes or SDKs:
https://aka.ms/dotnet-download
Kevins-MBP:kevinransom kevinr$ dotnet fsi

For help type #help;;

2+2;;
val it : int = 4

````

KevinRansom on 15 Nov 2019

@KevinRansom, just to note, the two versions of the preview are not identical. @cartermp uses 014645 and you:

Version: 3.1.100-preview3-014639

Considering that the bug comes and goes, reprodibililty may have to do with that.

abelbraaksma on 15 Nov 2019

For the sceptics among us here it is working on:
.NET Core SDKs installed:
3.1.100-preview3-014645 [/usr/local/share/dotnet/sdk

I am going to need to check it out on a machine that fails, to discover what the environment issues are.

````
Kevins-MBP:~ kevinr$ dotnet --info
.NET Core SDK (reflecting any global.json):
Version: 3.1.100-preview3-014645
Commit: b32d27f4b3

Runtime Environment:
OS Name: Mac OS X
OS Version: 10.15
OS Platform: Darwin
RID: osx.10.15-x64
Base Path: /usr/local/share/dotnet/sdk/3.1.100-preview3-014645/

Host (useful for support):
Version: 3.1.0-preview3.19553.2
Commit: 13f35c3d86

.NET Core SDKs installed:
3.1.100-preview3-014645 [/usr/local/share/dotnet/sdk]

.NET Core runtimes installed:
Microsoft.AspNetCore.App 3.1.0-preview3.19555.2 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
Microsoft.NETCore.App 3.1.0-preview3.19553.2 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]

To install additional .NET Core runtimes or SDKs:
https://aka.ms/dotnet-download
Kevins-MBP:~ kevinr$ dotnet fsi

Welcome to .NET Core 3.1!

SDK Version: 3.1.100-preview3-014645

Telemetry

The .NET Core tools collect usage data in order to help us improve your experience. The data is anonymous. It is collected by Microsoft and shared with the community. You can opt-out of telemetry by setting the DOTNET_CLI_TELEMETRY_OPTOUT environment variable to '1' or 'true' using your favorite shell.

Read more about .NET Core CLI Tools telemetry: https://aka.ms/dotnet-cli-telemetry

Explore documentation: https://aka.ms/dotnet-docs
Report issues and find source on GitHub: https://github.com/dotnet/core
Find out what's new: https://aka.ms/dotnet-whats-new
Learn about the installed HTTPS developer cert: https://aka.ms/aspnet-core-https
Use 'dotnet --help' to see available commands or visit: https://aka.ms/dotnet-cli-docs

Write your first app: https://aka.ms/first-net-core-app

For help type #help;;

2+2;;
val it : int = 4

````

KevinRansom on 15 Nov 2019

👍1

Tagging as needs-repro, since although I can reproduce it that must not evidently be the case for everyone else.

cartermp on 15 Nov 2019

We have a repro of this now.

KevinRansom on 22 Nov 2019

@cartermp , @brettfo this was fixed by this PR: https://github.com/dotnet/fsharp/pull/7725

The commit with this change is in the release/dev16.5 branch. However, the latest builds of dotnet cli has not been updated to include the most recent builds:

https://github.com/dotnet/toolset/blob/a5ba7188a56f57ec58df5080123561f749e9cb80/eng/Versions.props#L34

We need to follow up to ensure that master is flowing, or at least takes this fix.

Kevin

KevinRansom on 22 Nov 2019

👍1

@KevinRansom was this supposed to be fixed in SDK 3.1.100 released on December 3rd? I noticed that the PR was merged a while back so I would expect it to be, but I still see this bug:

➜  ~ dotnet fsi

Microsoft (R) F# Interactive version 10.7.0.0 for F# 4.7
Copyright (c) Microsoft Corporation. All Rights Reserved.

For help type #help;;

> let x = 2 + 2;;

  let x = 2 + 2;;
  --------^

/Users/tomasjansson/stdin(1,9): error FS0074: The type referenced through 'System.Decimal' is defined in an assembly that is not referenced. You must add a reference to assembly 'The system type 'System.Decimal' was required but no referenced system DLL contained this type'.

> #quit;;
gcloud: uc-sdk-ssp  kube:  gke_uc-pure_us-central1-b_dinosaur  ⌚ 21:07:12
➜  ~ dotnet --version
3.1.100

Output from dotnet --info

➜  ~ dotnet --info
.NET Core SDK (reflecting any global.json):
 Version:   3.1.100
 Commit:    cd82f021f4

Runtime Environment:
 OS Name:     Mac OS X
 OS Version:  10.15
 OS Platform: Darwin
 RID:         osx.10.15-x64
 Base Path:   /usr/local/share/dotnet/sdk/3.1.100/

Host (useful for support):
  Version: 3.1.0
  Commit:  65f04fb6db

.NET Core SDKs installed:
  1.0.1 [/usr/local/share/dotnet/sdk]
  1.0.4 [/usr/local/share/dotnet/sdk]
  2.0.0 [/usr/local/share/dotnet/sdk]
  2.1.105 [/usr/local/share/dotnet/sdk]
  2.1.302 [/usr/local/share/dotnet/sdk]
  2.1.503 [/usr/local/share/dotnet/sdk]
  2.2.100 [/usr/local/share/dotnet/sdk]
  3.0.100-preview7-012821 [/usr/local/share/dotnet/sdk]
  3.0.100 [/usr/local/share/dotnet/sdk]
  3.1.100 [/usr/local/share/dotnet/sdk]

.NET Core runtimes installed:
  Microsoft.AspNetCore.All 2.1.2 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.All 2.1.7 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.All 2.2.0 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.All]
  Microsoft.AspNetCore.App 2.1.2 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 2.1.7 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 2.2.0 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 3.0.0-preview7.19365.7 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 3.0.0 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 3.1.0 [/usr/local/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 1.0.4 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 1.0.5 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 1.1.1 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 1.1.2 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.0.0 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.0.7 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.1.2 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.1.7 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 2.2.0 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 3.0.0-preview7-27912-14 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 3.0.0 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]
  Microsoft.NETCore.App 3.1.0 [/usr/local/share/dotnet/shared/Microsoft.NETCore.App]

To install additional .NET Core runtimes or SDKs:
  https://aka.ms/dotnet-download

mastoj on 7 Dec 2019

@mastoj The fix is not in .NET Core 3.1. We'll need to see if we can service it.

I recommend removing all other SDKs on your machine. We noticed that with a clean machine and the .NET Core 3.1 SDK, it's fine.

cartermp on 7 Dec 2019

In the meantime, I highly recommend using Jupyter Notebooks instead of "raw" FSI in any non-production scenario. At this point I can confidently say it's superior in every way for interactive F# programming. You can learn how to set it up here: https://github.com/dotnet/try/blob/master/NotebooksLocalExperience.md

cartermp on 7 Dec 2019

@cartermp thanks. Deleted the other sdks and it seems to be working.

mastoj on 7 Dec 2019

I was having this same problem with version .NET Core 3.1 SDK on MacOS 10.14.6. I had many older SDKs installed and can confirm that removing them all and reinstalling 3.1 fixed it. I uninstalled using this script

cowlike on 9 Dec 2019

👍2

@cowlike nice find!

cartermp on 9 Dec 2019

@mastoj, the fix is for VS 16.5, it arrived too late for 16.4. And there has been an issue with our code-flow into the 16.5 previews, so they don't yet have the fix. @brettfo is tracking down the issue.

Kevin

KevinRansom on 9 Dec 2019

👍1

The fix that shipped with VS 16.5 and .NET Core SDK 3.1.201 should be live. I can also confirm that everything works in the latest .NET 5 preview. I'll close this out, but if folks still see it with SDK 3.1.201 or the latest .NET 5 preview then let us know.

cartermp on 27 Mar 2020

👍1

Fsharp: Cannot do anything with `dotnet fsi` in .NET Core 3.1 preview

Most helpful comment

All 22 comments

Welcome to .NET Core 3.1!

Telemetry

Write your first app: https://aka.ms/first-net-core-app

Welcome to .NET Core 3.1!

Telemetry

Write your first app: https://aka.ms/first-net-core-app

Welcome to .NET Core 5.0!

Telemetry

Learn about HTTPS: https://aka.ms/dotnet-https

Use 'dotnet --help' to see available commands or visit: https://aka.ms/dotnet-cli

Welcome to .NET Core 3.1!

Telemetry

Write your first app: https://aka.ms/first-net-core-app

Related issues