Move to Runic.jl as the main formatter

.github/copilot-instructions.md

@@ -19,12 +19,13 @@ SolarPosition.jl provides a simple, unified interface to a collection of validat
 
 ### General Style
 
-1. **Indentation**: Use 4 spaces (configured in `.JuliaFormatter.toml`)
-2. **Line length**: Maximum 92 characters (configured in `.JuliaFormatter.toml`)
+1. **Indentation**: Use 4 spaces
+2. **Line length**: Maximum 92 characters (soft limit, not enforced)
 3. **Line endings**: Unix-style LF only
-4. **Formatting**: Code is automatically formatted with JuliaFormatter
-   - Run manually: `julia -e 'using JuliaFormatter; format(".")'`
+4. **Formatting**: Code is automatically formatted with Runic
+   - Run manually: `julia -m Runic --inplace .` (requires Runic to be installed)
    - Pre-commit hooks ensure formatting before commits
+   - Note: Runic has no configuration - formatting rules are set in stone
 
 ### Documentation
 
@@ -115,7 +116,7 @@ pip install pre-commit
 pre-commit run --all-files
 
 # Individual tools:
-# - JuliaFormatter: Code formatting
+# - Runic: Code formatting
 # - ExplicitImports: Check for explicit imports
 # - markdownlint: Markdown linting
 # - yamllint: YAML linting
@@ -172,8 +173,8 @@ The project uses GitHub Actions workflows:
 ## Useful Commands
 
 ```bash
-# Format code
-julia -e 'using Pkg; pkg"add JuliaFormatter"; using JuliaFormatter; format(".")'
+# Format code (requires Runic to be installed: julia --project=@runic -e 'using Pkg; Pkg.add("Runic")')
+julia --project=@runic --startup-file=no -m Runic --inplace .
 
 # Run tests
 julia --project=. -e 'using Pkg; Pkg.test()'
@@ -192,6 +193,6 @@ See [docs/src/contributing.md](../docs/src/contributing.md) for detailed contrib
 
 ## References
 
-- [JuliaFormatter documentation](https://domluna.github.io/JuliaFormatter.jl/stable/)
+- [Runic documentation](https://github.com/fredrikekre/Runic.jl)
 - [DocStringExtensions documentation](https://juliadocs.org/DocStringExtensions.jl/stable/)
 - [Julia Style Guide](https://docs.julialang.org/en/v1/manual/style-guide/)

.github/workflows/Copier.yml

@@ -17,8 +17,6 @@ jobs:
           version: "1"
       - name: Use Julia cache
         uses: julia-actions/cache@v2
-      - name: Install JuliaFormatter.jl
-        run: julia -e 'using Pkg; pkg"add JuliaFormatter"'
       - name: Hack for setup-python cache # https://github.com/actions/setup-python/issues/807
         run: touch requirements.txt
       - name: Setup Python

.github/workflows/Lint.yml

@@ -30,7 +30,7 @@ jobs:
       - name: Build package (required for ExplicitImports)
         uses: julia-actions/julia-buildpkg@v1
       - name: Install Julia packages
-        run: julia -e 'using Pkg; pkg"add ExplicitImports, JuliaFormatter"'
+        run: julia -e 'using Pkg; pkg"add ExplicitImports"'
       - name: Hack for setup-python cache # https://github.com/actions/setup-python/issues/807
         run: touch requirements.txt
       - name: Setup Python

.gitignore

@@ -17,3 +17,4 @@ node_modules
 play/Project.toml
 docs/.CondaPkg/meta
 *.mem
+**/Manifest-*.toml

.pre-commit-config.yaml

@@ -13,9 +13,6 @@ repos:
       - id: check-json
       - id: check-toml
       - id: check-yaml
-      - id: file-contents-sorter
-        files: .JuliaFormatter.toml
-        args: [--unique]
       - id: mixed-line-ending
         args: [--fix=lf]
       - id: no-commit-to-branch
@@ -47,10 +44,10 @@ repos:
       - id: explicit-imports
         name: ExplicitImports checks
         args: [--print, --checklist, exclude_all_qualified_accesses_are_public]
-  - repo: https://github.com/domluna/JuliaFormatter.jl
-    rev: v2.2.1
+  - repo: https://github.com/fredrikekre/runic-pre-commit
+    rev: v2.0.1
     hooks:
-      - id: julia-formatter
+      - id: runic
   - repo: https://github.com/crate-ci/typos
     rev: v1
     hooks: