prior install of dotnet-sdk-7.0 breaks dotnet-sdk-8.0

[RytisLT]

Installing dotnet-sdk-8.0 to a fresh Ubuntu machine works, upgrading from dotnet-sdk-7.0 results in the built binary outputting:

You must install .NET to run this application.

App: /tmp/console8/bin/Debug/net8.0/console8
Architecture: x64
App host version: 8.0.0
.NET location: Not found

Learn more:
https://aka.ms/dotnet/app-launch-failed

Download the .NET runtime:
https://aka.ms/dotnet-core-applaunch?missing_runtime=true&arch=x64&rid=linux-x64&os=ubuntu.23.10&apphost_version=8.0.0

To Reproduce

run the following script

#!/bin/bash

# Install dotnet-sdk-8.0
apt update && apt install wget -y &&
declare repo_version=$(if command -v lsb_release &> /dev/null; then lsb_release -r -s; else grep -oP '(?<=^VERSION_ID=).+' /etc/os-release | tr -d '"'; fi) &&
wget https://packages.microsoft.com/config/ubuntu/$repo_version/packages-microsoft-prod.deb -O packages-microsoft-prod.deb &&
dpkg -i packages-microsoft-prod.deb &&
apt update &&
apt install dotnet-sdk-8.0 -y &&

# Verify dotnet works
cd /tmp &&
mkdir console8 &&
cd console8 &&
dotnet new console &&
dotnet build &&
./bin/Debug/net8.0/console8 &&

# Install dotnet-sdk-7.0 and upgrade back to dotnet-sdk-8.0
apt remove dotnet-sdk-8.0 -y &&
apt autoremove -y &&
apt install dotnet-sdk-7.0 -y &&
apt remove dotnet-sdk-7.0 -y &&
apt autoremove -y &&
apt install dotnet-sdk-8.0 -y &&

# Binary refuses to run
./bin/Debug/net8.0/console8

This is super easy to reproduce using ubuntu docker images.

docker run -it ubuntu:22.04

I've tested 22.04 and 23.10, got same results.

Further technical details

• fresh dotnet --info
  root@b47a0fc499e8:/# dotnet --info
  .NET SDK:
  Version: 8.0.100
  Commit: 57efcf1350
  Workload version: 8.0.100-manifests.6c33ef20

  Runtime Environment:
  OS Name: ubuntu
  OS Version: 23.10
  OS Platform: Linux
  RID: linux-x64
  Base Path: /usr/share/dotnet/sdk/8.0.100/

  .NET workloads installed:
  Workload version: 8.0.100-manifests.6c33ef20
  There are no installed workloads to display.

  Host:
  Version: 8.0.0
  Architecture: x64
  Commit: 5535e31a71

  .NET SDKs installed:
  8.0.100 [/usr/share/dotnet/sdk]

  .NET runtimes installed:
  Microsoft.AspNetCore.App 8.0.0 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 8.0.0 [/usr/share/dotnet/shared/Microsoft.NETCore.App]

  Other architectures found:
  None

  Environment variables:
  Not set

  global.json file:
  Not found

  Learn more:
  https://aka.ms/dotnet/info

  Download .NET:
  https://aka.ms/dotnet/download

• borked dotnet --info

  root@b47a0fc499e8:/tmp/console8# dotnet --info
  .NET SDK:
  Version: 8.0.100
  Commit: 57efcf1350
  Workload version: 8.0.100-manifests.6c33ef20

  Runtime Environment:
  OS Name: ubuntu
  OS Version: 23.10
  OS Platform: Linux
  RID: linux-x64
  Base Path: /usr/share/dotnet/sdk/8.0.100/

  .NET workloads installed:
  Workload version: 8.0.100-manifests.6c33ef20
  There are no installed workloads to display.

  Host:
  Version: 8.0.0
  Architecture: x64
  Commit: 5535e31a71

  .NET SDKs installed:
  8.0.100 [/usr/share/dotnet/sdk]

  .NET runtimes installed:
  Microsoft.AspNetCore.App 8.0.0 [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 8.0.0 [/usr/share/dotnet/shared/Microsoft.NETCore.App]

  Other architectures found:
  None

  Environment variables:
  Not set

  global.json file:
  Not found

  Learn more:
  https://aka.ms/dotnet/info

  Download .NET:
  https://aka.ms/dotnet/download

EDIT:
fixed copy paste error in script

[RytisLT]

Found a workaround/solution by creating two docker images using following docker files and diffing the images

# good
FROM ubuntu:22.04
RUN apt update
RUN apt install wget -y
RUN wget https://packages.microsoft.com/config/ubuntu/22.04/packages-microsoft-prod.deb -O packages-microsoft-prod.deb
RUN dpkg -i packages-microsoft-prod.deb
RUN apt update
RUN apt install dotnet-sdk-8.0 -y

# bad
FROM ubuntu:22.04
RUN apt update
RUN apt install wget -y
RUN apt install dotnet-sdk-7.0 -y
RUN apt remove dotnet-sdk-7.0 -y
RUN apt autoremove -y

RUN wget https://packages.microsoft.com/config/ubuntu/22.04/packages-microsoft-prod.deb -O packages-microsoft-prod.deb
RUN dpkg -i packages-microsoft-prod.deb
RUN apt update
RUN apt install dotnet-sdk-8.0 -y

> container-diff diff  daemon://good daemon://bad
-----Size-----

Image size difference between good and bad:
SIZE1         SIZE2
710.6M        710.6M

 ~/dotnet  container-diff diff  daemon://good daemon://bad --type=file

-----File-----

These entries have been added to good:
FILE                                                                                                           SIZE
/etc/dotnet                                                                                                    32B
/etc/dotnet/install_location                                                                                   16B
/etc/dotnet/install_location_x64                                                                               16B
/etc/profile.d/dotnet.sh                                                                                       431B
/tmp/tmp.VOWtLmVgWW                                                                                            3.3K
/tmp/tmp.VOWtLmVgWW/.dotnet                                                                                    3.3K
/tmp/tmp.VOWtLmVgWW/.dotnet/8.0.100_IsDockerContainer.dotnetUserLevelCache                                     4B
/tmp/tmp.VOWtLmVgWW/.dotnet/8.0.100_MachineId.dotnetUserLevelCache                                             64B
/tmp/tmp.VOWtLmVgWW/.dotnet/MachineId.v1.dotnetUserLevelCache                                                  64B
/tmp/tmp.VOWtLmVgWW/.dotnet/TelemetryStorageService                                                            3.2K
/tmp/tmp.VOWtLmVgWW/.dotnet/TelemetryStorageService/20231214104146_30ac195df119476892ead57d18f687f5.trn        1000B
/tmp/tmp.VOWtLmVgWW/.dotnet/TelemetryStorageService/20231214104146_7d3480f54c0440dbbcacec88f7609c34.trn        1.1K
/tmp/tmp.VOWtLmVgWW/.dotnet/TelemetryStorageService/20231214104146_85f05bc40e9b4935819ea068efd493b5.trn        1.1K
/var/lib/dpkg/info/dotnet-host-7.0.list                                                                        119B

These entries have been deleted from good:
FILE                                                                                                           SIZE
/tmp/tmp.ZHavMvhxqI                                                                                            3.3K
/tmp/tmp.ZHavMvhxqI/.dotnet                                                                                    3.3K
/tmp/tmp.ZHavMvhxqI/.dotnet/8.0.100_IsDockerContainer.dotnetUserLevelCache                                     4B
/tmp/tmp.ZHavMvhxqI/.dotnet/8.0.100_MachineId.dotnetUserLevelCache                                             64B
/tmp/tmp.ZHavMvhxqI/.dotnet/MachineId.v1.dotnetUserLevelCache                                                  64B
/tmp/tmp.ZHavMvhxqI/.dotnet/TelemetryStorageService                                                            3.2K
/tmp/tmp.ZHavMvhxqI/.dotnet/TelemetryStorageService/20231214104011_101420711a364f6085347584f3a6d6de.trn        1.1K
/tmp/tmp.ZHavMvhxqI/.dotnet/TelemetryStorageService/20231214104011_74037373f7e344dba502d8ec497ff2d1.trn        1000B
/tmp/tmp.ZHavMvhxqI/.dotnet/TelemetryStorageService/20231214104011_cf3b11888a51466da4d80faf1bba9733.trn        1.1K

These entries have been changed between good and bad:
FILE                                 SIZE1         SIZE2
/var/log/dpkg.log                    184K          200.9K
/var/lib/dpkg/status-old             107.4K        108.4K
/var/lib/dpkg/status                 107.4K        108.4K
/var/log/apt/history.log             19.6K         21.5K
/var/cache/ldconfig/aux-cache        5.9K          5.9K
/var/log/apt/term.log                5.9K          12.8K
/root/.wget-hsts                     177B          177B

deleting following files solves the problem:

/etc/dotnet/install_location
/etc/dotnet/install_location_x64
/etc/profile.d/dotnet.sh

These files are not present on the good image

[vitek-karas]

@richlander for details.

I think the packages from Ubuntu and from Microsoft repositories are not "compatible" - we recommend using either one or the other for everything: https://learn.microsoft.com/en-us/dotnet/core/install/linux-ubuntu (see the warning on that page).