### Bug Description Building a trivial snap on Ubuntu 22.04 with snapcraft 7.4.3 and provider LXD with "snapcraft try", the eventual prime/ directory contains nothing but: $ tree prime prime └── meta ├── gui └── snap.yaml $ This appears to be entirely reproducible for me. ### To Reproduce Pick a random snap and run "snapcraft try" using LXD provider -- the output suggests you can now run "snap try prime", but given that there is no meaningful payload, you get: error: cannot try /home/rpjday/sc101v23/snapcraft-101-labs/basic-snap/prime: snap is unusable due to missing files; contact developer ### Environment Ubuntu 22.04, snapcraft 7.4.3. ### snapcraft.yaml ```shell name: basic-snap base: core22 # the base snap is the execution environment for this snap version: '0.99' summary: Demo snap to show basic snap features. description: | Snap to demo numerous basic snap properties and operations. grade: devel confinement: devmode apps: basic-snap: command: basic.sh hello: command: hello.sh hi: command: d1/d2/hi.sh parts: basic: source: src1/ plugin: dump hello: source: src2/ plugin: dump hi: source: src3/ plugin: dump ``` ### Relevant log output ```shell $ snap try prime error: cannot try /home/rpjday/sc101v23/snapcraft-101-labs/basic-snap/prime: snap is unusable due to missing files; contact developer ``` ### Additional context _No response_