pin altair dependency

Author: clarasb

chartlets.py/CHANGES.md

@@ -3,7 +3,8 @@
 * Added `size` and removed `variant` property from `IconButton`
   component to align with component in chartlets.js. (#124)
 
-* Removed pinning of `altair` dependency. (#132)
+* Updated dependencies
+	- `altair>=6.0.0,<7.0.0` (#132)
 
 ## Version 0.1.7 (from 2025/12/03)
 

chartlets.py/environment.yml

@@ -5,7 +5,7 @@ dependencies:
   # Library Dependencies
   - python >=3.10,<3.14
   # Optional Dependencies
-  - altair
+  - altair >=6.0.0,<7.0.0
   # Demo Dependencies
   - pandas
   - pyaml

chartlets.py/pyproject.toml

@@ -47,10 +47,10 @@ exclude = [
 
 [project.optional-dependencies]
 opt = [
-  "altair",
+  "altair>=6.0.0,<7.0.0",
 ]
 dev = [
-  "altair",
+  "altair>=6.0.0,<7.0.0",
   "black",
   "flake8",
   "pytest",
@@ -67,7 +67,7 @@ doc = [
   "mkdocstrings-python"
 ]
 demo = [
-  "altair",
+  "altair>=6.0.0,<7.0.0",
   "pyaml",
   "pandas",
   "tornado",