Add inv dev

tasks.py

@@ -7,6 +7,7 @@
 from blueprint.tasks import web, bp, print_bp, serve
 
 ROOT = Path(__file__).parent
+BP_DIR = ROOT/'blueprint'
 
 @task(bp, web)
 def all(ctx):
@@ -17,4 +18,33 @@ def all(ctx):
 @task(web)
 def html(ctx):
     shutil.rmtree(ROOT/'docs'/'blueprint', ignore_errors=True)
-    shutil.copytree(ROOT/'blueprint'/'web', ROOT/'docs'/'blueprint')
+    shutil.copytree(ROOT/'blueprint'/'web', ROOT/'docs'/'blueprint')
+
+@task(bp, web)
+def dev(ctx):
+    """
+    Serve the blueprint website, rebuild PDF and the website on file changes
+    """
+
+    from watchfiles import run_process, DefaultFilter
+
+    def callback(changes):
+        print('Changes detected:', changes)
+        bp(ctx)
+        web(ctx)
+
+    run_process(BP_DIR/'src', target='inv serve', callback=callback,
+        watch_filter=DefaultFilter(
+            ignore_entity_patterns=(
+                '.*\.aux$',
+                '.*\.log$',
+                '.*\.fls$',
+                '.*\.fdb_latexmk$',
+                '.*\.bbl$',
+                '.*\.paux$',
+                '.*\.pdf$',
+                '.*\.out$',
+                '.*\.blg$',
+                '.*\.synctex.*$',
+            )
+        ))