diff --git a/.github/workflows/hackage.yml b/.github/workflows/hackage.yml
new file mode 100644
index 0000000000..ec0d308098
--- /dev/null
+++ b/.github/workflows/hackage.yml
@@ -0,0 +1,133 @@
+name: Hackage
+
+on:
+  push:
+    branches:
+      - '*-hackage'
+
+jobs:
+  check-and-upload-tarballs:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        package: ["hie-compat", "hls-graph", "shake-bench",
+                  "hls-plugin-api", "ghcide", "hls-test-utils",
+                  "hls-brittany-plugin", "hls-floskell-plugin", "hls-fourmolu-plugin",
+                  "hls-ormolu-plugin", "hls-stylish-haskell-plugin",
+                  "hls-class-plugin", "hls-eval-plugin", "hls-explicit-imports-plugin",
+                  "hls-haddock-comments-plugin", "hls-hlint-plugin",
+                  "hls-module-name-plugin", "hls-pragmas-plugin",
+                  "hls-refine-imports-plugin", "hls-retrie-plugin",
+                  "hls-splice-plugin", "hls-tactics-plugin",
+                  "hls-call-hierarchy-plugin",
+                  "haskell-language-server"]
+        ghc: ["8.10.7", "8.8.4", "8.6.5"]
+
+    steps:
+
+      - uses: actions/checkout@v2
+        with:
+          submodules: true
+
+      - uses: haskell/actions/setup@v1
+        with:
+          ghc-version: ${{ matrix.ghc }}
+          cabal-version: '3.4'
+
+      - name: Cache Cabal
+        uses: actions/cache@v2
+        env:
+          cache-name: cache-cabal
+        with:
+          path: |
+            ~/.cabal/packages
+            ~/.cabal/store
+          key: v2-${{ runner.os }}-${{ matrix.ghc }}-build-${{ hashFiles('cabal.project') }}
+          restore-keys: |
+            v2-${{ runner.os }}-${{ matrix.ghc }}-bench-${{ hashFiles('cabal.project') }}
+            v2-${{ runner.os }}-${{ matrix.ghc }}-build-
+            v2-${{ runner.os }}-${{ matrix.ghc }}
+
+      - name: "Run cabal check"
+        run: |
+          if [[ ${{ matrix.package }} == *plugin ]]; then
+            cd plugins
+          fi
+          if [[ ${{ matrix.package }} != haskell-language-server ]]; then
+            cd ${{ matrix.package }}
+          fi
+          cabal check
+
+      - name: "Generate package dist tarball"
+        id: generate-dist-tarball
+        run: |
+          if [[ ${{ matrix.package }} == haskell-language-server ]]; then
+            cabal sdist --builddir=./
+          else
+            cabal sdist ${{ matrix.package }} --builddir=./
+          fi
+          echo ::set-output name=path::$(ls ./sdist/${{ matrix.package }}-*)
+
+      - name: "Unpack package source in an isolated location"
+        run: cabal unpack ${{ steps.generate-dist-tarball.outputs.path }} --destdir=./incoming
+
+      - name: "Try to get the current hackage version"
+        id: get-hackage-version
+        run: |
+          cd ./incoming
+          if cabal get $(ls -d ${{ matrix.package }}-*) --destdir=../current; then
+            echo ::set-output name=exists::true
+          fi
+
+      - name: "Compare the incoming and the current hackage version of the package"
+        id: compare-current-version
+        if: steps.get-hackage-version.exists == 'true'
+        run: |
+          # This will throw an error if there is any difference cause we have to bump up the package version
+          diff -qr -x "*.md" -x "data" $(ls -d ./incoming/${{ matrix.package }}-*) $(ls -d ./current/${{ matrix.package }}-*)
+
+      - name: "Create appropiate cabal.project"
+        if: steps.get-hackage-version.exists != 'true'
+        run: |
+          cd $(ls -d ./incoming/${{ matrix.package }}-*)
+          echo "packages: . ../../* ../../plugins/*" > cabal.project
+          # TODO: remove when not needed
+          echo "allow-newer: Chart-diagrams:diagrams-core, SVGFonts:diagrams-core" >> cabal.project
+
+      - name: "Build all package components in isolation"
+        if: steps.get-hackage-version.exists != 'true'
+        run: |
+          cd $(ls -d ./incoming/${{ matrix.package }}-*)
+          cabal build --enable-tests --enable-benchmarks
+
+      - name: "Generate haddock for hackage"
+        if: steps.get-hackage-version.exists != 'true'
+        run: |
+          cd $(ls -d ./incoming/${{ matrix.package }}-*)
+          cabal haddock --haddock-for-hackage
+
+      - name: "Upload package dist tarball"
+        if: steps.get-hackage-version.exists != 'true'
+        uses: actions/upload-artifact@v2
+        with:
+          name: ${{ matrix.package }}
+          path: ${{ steps.generate-dist-tarball.outputs.path }}
+
+  upload-candidate:
+    needs: check-and-upload-tarballs
+    runs-on: ubuntu-latest
+    steps:
+
+      - uses: actions/download-artifact@v2
+        with:
+          path: packages
+
+      - name: "Join all tarballs"
+        run: find ./packages -type f -name '*.tar.gz' -exec cp {} ./packages \;
+
+      - name: "Upload all tarballs to hackage"
+        uses: haskell-actions/hackage-publish@v1
+        with:
+          hackageToken: ${{ secrets.HACKAGE_AUTH_TOKEN }}
+          packagesPath: packages
+          publish: false
diff --git a/plugins/hls-call-hierarchy-plugin/hls-call-hierarchy-plugin.cabal b/plugins/hls-call-hierarchy-plugin/hls-call-hierarchy-plugin.cabal
index 140f547c95..5d6ac8b9b8 100644
--- a/plugins/hls-call-hierarchy-plugin/hls-call-hierarchy-plugin.cabal
+++ b/plugins/hls-call-hierarchy-plugin/hls-call-hierarchy-plugin.cabal
@@ -2,6 +2,9 @@ cabal-version:      2.4
 name:               hls-call-hierarchy-plugin
 version:            1.0.0.2
 synopsis:           Call hierarchy plugin for Haskell Language Server
+description:
+  Please see the README on GitHub at <https://github.com/haskell/haskell-language-server/tree/master/plugins/hls-call-hierarchy-plugin#readme>
+
 license:            Apache-2.0
 license-file:       LICENSE
 author:             Lei Zhu
@@ -21,7 +24,7 @@ library
 
   hs-source-dirs:     src
   build-depends:
-    , aeson
+    , aeson                 >=1.5.2.0
     , base                  >=4.12 && <5
     , bytestring
     , containers
diff --git a/plugins/hls-explicit-imports-plugin/hls-explicit-imports-plugin.cabal b/plugins/hls-explicit-imports-plugin/hls-explicit-imports-plugin.cabal
index 98961ad2f5..cde982cf6f 100644
--- a/plugins/hls-explicit-imports-plugin/hls-explicit-imports-plugin.cabal
+++ b/plugins/hls-explicit-imports-plugin/hls-explicit-imports-plugin.cabal
@@ -2,6 +2,8 @@ cabal-version:      2.2
 name:               hls-explicit-imports-plugin
 version:            1.0.0.4
 synopsis:           Explicit imports plugin for Haskell Language Server
+description:
+  Please see the README on GitHub at <https://github.com/haskell/haskell-language-server#readme>
 license:            Apache-2.0
 license-file:       LICENSE
 author:             Pepe Iborra
diff --git a/plugins/hls-hlint-plugin/hls-hlint-plugin.cabal b/plugins/hls-hlint-plugin/hls-hlint-plugin.cabal
index 3a0c54485c..9a839d33ae 100644
--- a/plugins/hls-hlint-plugin/hls-hlint-plugin.cabal
+++ b/plugins/hls-hlint-plugin/hls-hlint-plugin.cabal
@@ -3,7 +3,7 @@ name:          hls-hlint-plugin
 version:       1.0.1.1
 synopsis:      Hlint integration plugin with Haskell Language Server
 description:
-  Please see Haskell Language Server Readme (https://github.com/haskell/haskell-language-server#readme)
+  Please see the README on GitHub at <https://github.com/haskell/haskell-language-server#readme>
 
 license:       Apache-2.0
 license-file:  LICENSE
diff --git a/plugins/hls-refine-imports-plugin/hls-refine-imports-plugin.cabal b/plugins/hls-refine-imports-plugin/hls-refine-imports-plugin.cabal
index 7b16113a4a..4a2b3a71b9 100644
--- a/plugins/hls-refine-imports-plugin/hls-refine-imports-plugin.cabal
+++ b/plugins/hls-refine-imports-plugin/hls-refine-imports-plugin.cabal
@@ -1,7 +1,9 @@
-cabal-version:      2.2
+cabal-version:      2.4
 name:               hls-refine-imports-plugin
 version:            1.0.0.1
 synopsis:           Refine imports plugin for Haskell Language Server
+description:
+  Please see the README on GitHub at <https://github.com/haskell/haskell-language-server#readme>
 license:            Apache-2.0
 license-file:       LICENSE
 author:             rayshih
diff --git a/plugins/hls-retrie-plugin/hls-retrie-plugin.cabal b/plugins/hls-retrie-plugin/hls-retrie-plugin.cabal
index 74ddd52caf..7b9f1c190e 100644
--- a/plugins/hls-retrie-plugin/hls-retrie-plugin.cabal
+++ b/plugins/hls-retrie-plugin/hls-retrie-plugin.cabal
@@ -2,6 +2,8 @@ cabal-version:      2.2
 name:               hls-retrie-plugin
 version:            1.0.1.1
 synopsis:           Retrie integration plugin for Haskell Language Server
+description:
+  Please see the README on GitHub at <https://github.com/haskell/haskell-language-server#readme>
 license:            Apache-2.0
 license-file:       LICENSE
 author:             Pepe Iborra
diff --git a/plugins/hls-splice-plugin/hls-splice-plugin.cabal b/plugins/hls-splice-plugin/hls-splice-plugin.cabal
index 64786bfd33..4f9d7600e5 100644
--- a/plugins/hls-splice-plugin/hls-splice-plugin.cabal
+++ b/plugins/hls-splice-plugin/hls-splice-plugin.cabal
@@ -5,7 +5,7 @@ synopsis:
   HLS Plugin to expand TemplateHaskell Splices and QuasiQuotes
 
 description:
-  HLS Plugin to expand TemplateHaskell Splices and QuasiQuotes.
+  Please see the README on GitHub at <https://github.com/haskell/haskell-language-server#readme>
 
 license:            Apache-2.0
 license-file:       LICENSE
diff --git a/plugins/hls-stylish-haskell-plugin/hls-stylish-haskell-plugin.cabal b/plugins/hls-stylish-haskell-plugin/hls-stylish-haskell-plugin.cabal
index 25570a2156..42ced2748b 100644
--- a/plugins/hls-stylish-haskell-plugin/hls-stylish-haskell-plugin.cabal
+++ b/plugins/hls-stylish-haskell-plugin/hls-stylish-haskell-plugin.cabal
@@ -2,6 +2,8 @@ cabal-version:      2.4
 name:               hls-stylish-haskell-plugin
 version:            1.0.0.2
 synopsis:           Integration with the Stylish Haskell code formatter
+description:
+  Please see the README on GitHub at <https://github.com/haskell/haskell-language-server#readme>
 license:            Apache-2.0
 license-file:       LICENSE
 author:             The Haskell IDE Team
diff --git a/plugins/hls-tactics-plugin/hls-tactics-plugin.cabal b/plugins/hls-tactics-plugin/hls-tactics-plugin.cabal
index 161f7e2613..ef9e605202 100644
--- a/plugins/hls-tactics-plugin/hls-tactics-plugin.cabal
+++ b/plugins/hls-tactics-plugin/hls-tactics-plugin.cabal
@@ -3,7 +3,8 @@ category:           Development
 name:               hls-tactics-plugin
 version:            1.3.0.0
 synopsis:           Wingman plugin for Haskell Language Server
-description:        Please see README.md
+description:
+  Please see the README on GitHub at <https://github.com/haskell/haskell-language-server#readme>
 author:             Sandy Maguire, Reed Mullanix
 maintainer:         sandy@sandymaguire.me
 copyright:          Sandy Maguire, Reed Mullanix