CI: add a fantomas step

To avoid, from the start, potential bikeshedding debates about
style in PRs.

.editorconfig

@@ -0,0 +1,45 @@
+[*]
+insert_final_newline=true
+
+[*.{fs,fsx,ts}]
+end_of_line=lf
+indent_size=4
+max_line_length=80
+fsharp_semicolon_at_end_of_line=false
+fsharp_space_before_parameter=false
+fsharp_space_before_lowercase_invocation=false
+fsharp_space_before_uppercase_invocation=false
+fsharp_space_before_class_constructor=false
+fsharp_space_before_member=false
+fsharp_space_before_colon=false
+fsharp_space_after_comma=true
+fsharp_space_before_semicolon=false
+fsharp_space_after_semicolon=true
+fsharp_indent_on_try_with=false
+fsharp_space_around_delimiter=true
+fsharp_max_if_then_else_short_width=0
+fsharp_max_infix_operator_expression=80
+fsharp_max_record_width=0
+fsharp_max_function_binding_width=0
+fsharp_max_value_binding_width=80
+fsharp_multiline_block_brackets_on_same_column=true
+fsharp_newline_between_type_definition_and_members=true
+fsharp_keep_if_then_in_same_line=true
+fsharp_strict_mode=false
+fsharp_multi_line_lambda_closing_newline=true
+fsharp_disable_elmish_syntax=true
+
+# Xml project files
+[*.{csproj,fsproj,vcxproj,vcxproj.filters,proj,nativeproj,locproj}]
+indent_size = 2
+
+# Xml config files
+[*.{props,targets,config,nuspec}]
+indent_size = 2
+
+# Shell scripts
+[*.sh]
+end_of_line = lf
+
+[*.{cmd, bat}]
+end_of_line = crlf

.github/workflows/CI.yml

@@ -92,3 +92,37 @@ jobs:
     
     - name: Test snap
       run: packwallet
+
+  conventions:
+    needs:
+    - integration_tests
+    - run_snap
+
+    runs-on: ubuntu-22.04
+    container:
+      image: "ubuntu:22.04"
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Install required dependencies
+      run: |
+        apt update
+        apt install --yes sudo
+        sudo apt install --yes --no-install-recommends git
+        # workaround for https://github.com/actions/runner/issues/2033
+        git config --global --add safe.directory '*'
+    - name: Setup .NET
+      run: |
+        # We need to install `ca-certificates`, otherwise we get these errors in the CI:
+        # Unable to load the service index for source https://api.nuget.org/v3/index.json.
+        # The SSL connection could not be established, see inner exception.
+        # The remote certificate is invalid because of errors in the certificate chain: UntrustedRoot
+        apt install --yes --no-install-recommends ca-certificates
+        apt install --yes --no-install-recommends dotnet6
+    - name: fantomas
+      run: |
+        dotnet new tool-manifest
+        dotnet tool install fantomas --version 6.2.3
+        dotnet fantomas .
+        git diff --exit-code
+

src/PackWallet/Program.fs

@@ -1,7 +1,8 @@
 open System.Net.Http
 open FSharp.Data
 
-type CoindDeskProvider = JsonProvider<"""
+type CoindDeskProvider =
+    JsonProvider<"""
     {
         "time": {
             "updated": "Feb 25, 2024 12:27:26 UTC",
@@ -42,7 +43,7 @@ let address = "https://api.coindesk.com/v1/bpi/currentprice.json"
 
 printfn "Retrieving contents of %s ...\n" address
 
-let contents = 
+let contents =
     webClient.GetStringAsync address
     |> Async.AwaitTask
     |> Async.RunSynchronously