Merge pull request #1549 from Lin-Buo-Ren/patch/snap/improve-packaging

Improve snap packaging

snap/snapcraft.yaml

@@ -23,7 +23,8 @@ description: |
       # snap connect shellcheck:removable-media
   
 version: git
-grade: devel
+base: core18
+grade: stable
 confinement: strict
 
 apps:
@@ -34,11 +35,11 @@ apps:
 parts:
   shellcheck:
     plugin: dump
-    source: ./
+    source: .
     build-packages:
       - cabal-install
-      - squid3
-    build: |
+      - squid
+    override-build: |
       # See comments in .snapsquid.conf
       [ "$http_proxy" ] && {
         squid3 -f .snapsquid.conf
@@ -48,6 +49,6 @@ parts:
       cabal sandbox init
       cabal update || cat /var/log/squid/*
       cabal install -j
-    install: |
+
       install -d $SNAPCRAFT_PART_INSTALL/usr/bin
       install .cabal-sandbox/bin/shellcheck $SNAPCRAFT_PART_INSTALL/usr/bin