feat: enable chisel

snap/snapcraft.yaml

@@ -187,3 +187,12 @@ parts:
         # The new implementation still requires this.
         ln -sf ../usr/bin/python3.10 $SNAPCRAFT_PART_INSTALL/bin/python3
     after: [snapcraft-libs, libgit2]
+
+  chisel:
+    plugin: go
+    source: https://github.com/canonical/chisel.git
+    source-commit: bd27f8700cd7d2a6b4e0df6b10c3761c83a70485
+    build-snaps:
+      - go/1.18/stable
+    organize:
+      bin/chisel: libexec/snapcraft/chisel

tests/spread/core22/chisel-base/snapcraft.yaml

@@ -0,0 +1,19 @@
+name: core2x
+type: base
+build-base: core22
+summary: base using chisel from core22 assets
+description: |
+  Test creating a base using a stable release of chisel
+version: 0+git
+confinement: strict
+
+parts:
+  base:
+    plugin: nil
+    stage-packages:
+      - base-files_etc
+      - base-files_bin
+      - base-files_lib
+      - base-files_tmp
+      - base-files_var
+      - base-files_home

tests/spread/core22/chisel-base/task.yaml

@@ -0,0 +1,17 @@
+summary: Build a simple snap
+
+environment:
+  SNAPCRAFT_BUILD_ENVIRONMENT: ""
+
+restore: |
+  snapcraft clean
+  rm -f ./*.snap
+
+execute: |
+  snapcraft pack
+  snap install core2x_*.snap --dangerous
+
+  # verify that the chisel packages made it to the base
+  [ -d /snap/core2x/current/bin ] || exit 1
+  [ -d /snap/core2x/current/lib ] || exit 1
+  [ -d /snap/core2x/current/var ] || exit 1