fix issue on mdbook config

The current directory should not be specified as the src directory. This causes a problem where the `.git` directory is copied into the `book` directory.

.github/workflows/book.yml

@@ -31,7 +31,7 @@ jobs:
 
     - name: Build Some LaTeX
       run: |
-        pandoc --to latex md/cover.md $(grep -o '\(md/.*\.md\)' SUMMARY.md | tr -d '(' | tr -d ')') --toc --template ./eisvogel.latex --top-level-division=chapter -V documentclass=book -V classoption=oneside --no-highlight |
+        pandoc --to latex md/cover.md $(grep -o '\(md/.*\.md\)' md/SUMMARY.md | tr -d '(' | tr -d ')') --toc --template ./eisvogel.latex --top-level-division=chapter -V documentclass=book -V classoption=oneside --no-highlight |
           sed -e 's/\\begin{verbatim}/\\begin{minted}{Lean}/' -e 's/{verbatim}/{minted}/' -e's/% Listings/\\usepackage{minted}\n\\newmintinline[lean]{pygments\/lean4.py:Lean4Lexer -x}{bgcolor=white}\n\\newminted[leancode]{pygments\/lean4.py:Lean4Lexer -x}{fontsize=\\footnotesize}\n\\setminted{fontsize=\\footnotesize, breaklines}\n/' >out.tex
 
     - name: Build a PDF

.gitignore

@@ -1,4 +1,4 @@
-/build
 .lake/
-book
-md/
+/book
+/md/*
+!/md/SUMMARY.md

book.toml

@@ -2,7 +2,7 @@
 authors = ["Arthur Paulino, Damiano Testa, Edward Ayers, Evgenia Karunus, Henrik Böving, Jannis Limperg, Siddhartha Gadgil, Siddharth Bhat"]
 language = "en"
 multilingual = false
-src = "."
+src = "md"
 title = "Metaprogramming in Lean 4"
 
 [output.html]

md/SUMMARY.md

@@ -0,0 +1,32 @@
+# Summary
+
+# Main
+
+- [Introduction](./main/01_intro.md)
+- [Overview](./main/02_overview.md)
+- [Expressions](./main/03_expressions.md)
+- [MetaM](./main/04_metam.md)
+- [Syntax](./main/05_syntax.md)
+- [Macros](./main/06_macros.md)
+- [Elaboration](./main/07_elaboration.md)
+- [Embedding DSLs By Elaboration](./main/08_dsls.md)
+- [Tactics](./main/09_tactics.md)
+- [Lean4 Cheat-sheet](./main/10_cheat-sheet.md)
+
+# Extra
+
+- [Options](./extra/01_options.md)
+- [Attributes]()
+- [Pretty Printing](./extra/03_pretty-printing.md)
+
+# Solutions
+
+- [Introduction]()
+- [Overview]()
+- [Expressions](./solutions/03_expressions.md)
+- [`MetaM`](./solutions/04_metam.md)
+- [`Syntax`](./solutions/05_syntax.md)
+- [Macros]()
+- [Elaboration](./solutions/07_elaboration.md)
+- [DSLs]()
+- [Tactics](./solutions/09_tactics.md)