supprt Replit.com Nix and Cabal for running examples

Author: mark-watson

.gitignore

@@ -9,4 +9,7 @@ NLPdb.hsproj
 .vscode
 stack.yaml.lock
 out
+dist-newstyle
+*.dyn_hi
+*.dyn_o
 

Makefile

@@ -19,7 +19,7 @@ build:
 	cd FastTag; stack build
 
 clean:
-	rm -r -f */.stack-work */dist-newstyle
+	rm -r -f */.stack-work */dist-newstyle */*.dyn*
 
 update_stack_resolver_macOs:
 	sed -i ''  's/^resolver: .*/resolver: lts-22.26/' */stack.yaml

Pure/README.md

@@ -6,4 +6,8 @@ stack  ghci
 
 These simple examples are some of the code used in the very long introductory tutorial chapter on using "pure" Haskell.
 
+## Running with Replit.com, Nix, Cabal:
 
+    cabal update
+    cabal build
+    cabal run

README.md

@@ -29,3 +29,20 @@ Note: 6/18/2020: install directions in Appendix A to optionally install **cabal-
         stack install cabal-install
 
 Installing **cabal-install** is optional. Installing **stack** using the directions in Appendix A which refers you to th official documentation at [http://docs.haskellstack.org/en/stable/README.html](http://docs.haskellstack.org/en/stable/README.html is sufficient for running the exampes in my book.
+
+## Notes for running examples using Replit.com repls (September 8, 2024)
+
+By default stack is not installed. 
+Accept the default's for Haskell after creating a new Replit repl by cloning this GitHub project.
+
+Then update cabal package index:
+
+    cd Pure
+    cabal update
+
+It will ask you which cabal sysem to install. I chose the command line version.
+
+    cabal build
+    cabal repl
+    ghci> :l Guards.hs 
+    ghci> main

replit.nix

@@ -1,5 +1,6 @@
 {pkgs}: {
   deps = [
+    pkgs.vim
     pkgs.cabal-install
     pkgs.stack
     pkgs.zlib.dev