How to create snap package with a custom manifest

[al-kau]

Problem

I'm trying to customize a snap manifest according to Publishing Your App for Linux documentation.
When I passed the relative path to the snapcraft.yaml file in the -p:SnapManifest property and the relative path to the unosnapdesktop.desktop path in the -p:DesktopFile property, I got the following errors:

/home/developer/.nuget/packages/uno.sdk.extras/5.6.3/buildTransitive/Uno.Sdk.Extras.Publish.Linux.targets(77,3): error : SnapManifest doesn't exist.
/home/developer/.nuget/packages/uno.sdk.extras/5.6.3/buildTransitive/Uno.Sdk.Extras.Publish.Linux.targets(77,3): error : DesktopFile doesn't exist.

Build failed with 2 error(s)

This does not happen when specifying the full path to the files.

Question

Where is the default path for SnapManifest and DesktopFile properties?

How to reproduce it

• Prerequisites
  • dotnet (v9.0.300)
  • Uno.Sdk (v6.0.130)
• Open a Terminal

dotnet new unoapp -o UnoSnapDesktop -preset "recommended" -platforms "desktop" -vscode False -theme "fluent" -presentation "mvvm" -http "none" -di False -log "none" -nav "blank" -toolkit False -theme-service False

cd UnoSnapDesktop

echo "name: unosnapdesktop
version: '1.0'
summary: UnoSnapDesktop
description: UnoSnapDesktop powered by Uno Platform.

base: core24
confinement: classic
grade: stable

apps:
  unosnapdesktop:
    command: UnoSnapDesktop

parts:
  unosnapdesktop:
    plugin: dump
    source: ./
    stage-packages:
      - ca-certificates
      - libc6
      - libgcc-s1
      - libicu74
      - liblttng-ust1
      - libssl3
      - libstdc++6
      - libunwind8
      - zlib1g
" > snapcraft.yaml 

echo "[Desktop Entry]
Type=Application
Version=1.0
Name=UnoSnapDesktop
Comment=UnoSnapDesktop
Exec=unosnapdesktop
Terminal=false
" > unosnapdesktop.desktop

dotnet publish -f net9.0-desktop -p:SelfContained=true -p:PackageFormat=snap -v d -p:SnapManifest=snapcraft.yaml -p:DesktopFile=unosnapdesktop.desktop

[ebariche]

@al-kau : It is relative to the .csproj