resync env.yaml (and bump some deps)

environment.yaml

@@ -1,11 +1,12 @@
-name: default
+name: build
 channels:
 - conda-forge
 - nodefaults
 dependencies:
-- conda >=23.7.3
-- conda-libmamba-solver >=23.7.0
-- conda-build >=24.3
+- python 3.12.*
+- conda >=24.9.2
+- conda-libmamba-solver >=24.9.0
+- conda-build >=24.9
 - conda-index >=0.3.0
 - conda-forge-ci-setup >=4.9.3,<5.0
 - conda-forge-pinning *

pixi.toml

@@ -7,7 +7,7 @@ channels = ["conda-forge"]
 platforms = ["linux-64", "linux-aarch64", "osx-64", "osx-arm64", "win-64"] # , "win-arm64"]
 
 [feature.python.dependencies]
-python = "*"
+python = "3.12.*"
 
 [feature.build.dependencies]
 conda = ">=24.9.2"
@@ -42,3 +42,4 @@ linux = ["linux", "python"]
 # osx and win do run natively on the machine, so we need the build deps too
 osx = ["osx", "python", "build"]
 win = ["win", "python", "build"]
+build = ["python", "build"]