Merge remote-tracking branch 'origin/main' into new-default

2023-02-16 12:41:48 +01:00 · 2023-02-16 12:41:48 +01:00 · ceb25f85f2
commit ceb25f85f2
--- a/repo2docker/buildpacks/conda/init.py
+++ b/repo2docker/buildpacks/conda/init.py
@ -1,10 +1,12 @@
 """BuildPack for conda environments"""
 import os
 import re
+import warnings
 from collections.abc import Mapping

 from ruamel.yaml import YAML

+from ...semver import parse_version as V
 from ...utils import is_local_pip_requirement
 from .._r_base import rstudio_base_scripts
 from ..base import BaseImage
@ -98,7 +100,7 @@ class CondaBuildPack(BaseImage):
        """
        path = super().get_path()
        path.insert(0, "${CONDA_DIR}/bin")
-        if self.py2:
+        if self.separate_kernel_env:
            path.insert(0, "${KERNEL_PYTHON_PREFIX}/bin")
        path.insert(0, "${NB_PYTHON_PREFIX}/bin")
        # This is at the end of $PATH, for backwards compat reasons
@ -172,20 +174,24 @@ class CondaBuildPack(BaseImage):
        frozen_name = f"environment-{self._conda_platform()}.lock"
        pip_frozen_name = "requirements.txt"
        if py_version:
-            if self.python_version == "2.7":
-                if "linux-64" != self._conda_platform():
+            conda_platform = self._conda_platform()
+            if self.separate_kernel_env:
+                self.log.warning(
+                    f"User-requested packages for legacy Python version {py_version} will be installed in a separate kernel environment.\n"
+                )
+                lockfile_name = f"environment.py-{py_version}-{conda_platform}.lock"
+                if not os.path.exists(os.path.join(HERE, lockfile_name)):
                    raise ValueError(
-                        f"Python version 2.7 {self._conda_platform()} is not supported!"
+                        f"Python version {py_version} on {conda_platform} is not supported!"
                    )
-
-                # python 2 goes in a different env
                files[
-                    "conda/environment.py-2.7-linux-64.lock"
+                    f"conda/{lockfile_name}"
                ] = self._kernel_environment_file = "/tmp/env/kernel-environment.lock"
-                # additional pip requirements for kernel env
-                if os.path.exists(os.path.join(HERE, "requirements.py-2.7.txt")):
+
+                requirements_file_name = f"requirements.py-{py_version}.pip"
+                if os.path.exists(os.path.join(HERE, requirements_file_name)):
                    files[
-                        "conda/requirements.py-2.7.txt"
+                        f"conda/{requirements_file_name}"
                    ] = (
                        self._kernel_requirements_file
                    ) = "/tmp/env/kernel-requirements.txt"
@ -333,8 +339,26 @@ class CondaBuildPack(BaseImage):
    @property
    def py2(self):
        """Am I building a Python 2 kernel environment?"""
+        warnings.warn(
+            "CondaBuildPack.py2 is deprecated in 2023.2. Use CondaBuildPack.separate_kernel_env.",
+            DeprecationWarning,
+            stacklevel=2,
+        )
        return self.python_version and self.python_version.split(".")[0] == "2"

+    # Python versions _older_ than this get a separate kernel env
+    kernel_env_cutoff_version = "3.7"
+
+    @property
+    def separate_kernel_env(self):
+        """Whether the kernel should be installed into a separate env from the server
+
+        Applies to older versions of Python that aren't kept up-to-date
+        """
+        return self.python_version and V(self.python_version) < V(
+            self.kernel_env_cutoff_version
+        )
+
    def get_preassemble_script_files(self):
        """preassembly only requires environment.yml

@ -352,7 +376,11 @@ class CondaBuildPack(BaseImage):
        """Return series of build-steps specific to this source repository."""
        scripts = []
        environment_yml = self.binder_path("environment.yml")
-        env_prefix = "${KERNEL_PYTHON_PREFIX}" if self.py2 else "${NB_PYTHON_PREFIX}"
+        env_prefix = (
+            "${KERNEL_PYTHON_PREFIX}"
+            if self.separate_kernel_env
+            else "${NB_PYTHON_PREFIX}"
+        )
        if os.path.exists(environment_yml):
            # TODO: when using micromamba, we call $MAMBA_EXE install -p ...
            # whereas mamba/conda need `env update -p ...` when it's an env.yaml file
@ -396,6 +424,7 @@ class CondaBuildPack(BaseImage):
                    echo auth-none=1 >> /etc/rstudio/rserver.conf && \
                    echo auth-minimum-user-id=0 >> /etc/rstudio/rserver.conf && \
                    echo "rsession-which-r={env_prefix}/bin/R" >> /etc/rstudio/rserver.conf && \
+                    echo "rsession-ld-library-path={env_prefix}/lib" >> /etc/rstudio/rserver.conf && \
                    echo www-frame-origin=same >> /etc/rstudio/rserver.conf
                    """,
                ),
--- a/repo2docker/buildpacks/conda/environment-linux-64.lock
+++ b/repo2docker/buildpacks/conda/environment-linux-64.lock
@ -1,8 +1,8 @@
-# AUTO GENERATED FROM environment.py-3.10.yml, DO NOT MANUALLY MODIFY
-# Frozen on 2023-02-03 15:07:27 UTC
+# AUTO GENERATED FROM environment.py-3.7.yml, DO NOT MANUALLY MODIFY
+# Frozen on 2023-02-03 12:33:27 UTC
 # Generated by conda-lock.
 # platform: linux-64
-# input_hash: 319256a4b378b6d51346c17bd2d31c0d9cd69bc3c1d10cd858de62da107fc85a
+# input_hash: 56d66ed1f6b5535bd09b3fb8546cc5bdb3cea65aa2ed89ffaf52424a63c739aa
@EXPLICIT
 https://conda.anaconda.org/conda-forge/linux-64/_libgcc_mutex-0.1-conda_forge.tar.bz2#d7c89558ba9fa0495403155b64376d81
 https://conda.anaconda.org/conda-forge/linux-64/ca-certificates-2022.12.7-ha878542_0.conda#ff9f73d45c4a07d6f424495288a26080
@ -13,11 +13,7 @@ https://conda.anaconda.org/conda-forge/noarch/tzdata-2022g-h191b570_0.conda#51fc
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-https://conda.anaconda.org/conda-forge/linux-64/bzip2-1.0.8-h7f98852_4.tar.bz2#a1fd65c7ccbf10880423d82bca54eb54
-https://conda.anaconda.org/conda-forge/linux-64/c-ares-1.18.1-h7f98852_0.tar.bz2#f26ef8098fab1f719c91eb760d63381a
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-https://conda.anaconda.org/conda-forge/linux-64/keyutils-1.6.1-h166bdaf_0.tar.bz2#30186d27e2c9fa62b45fb1476b7200e3
-https://conda.anaconda.org/conda-forge/linux-64/libev-4.33-h516909a_1.tar.bz2#6f8720dff19e17ce5d48cfe7f3d2f0a3
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-https://conda.anaconda.org/conda-forge/linux-64/python-3.10.9-he550d4f_0_cpython.conda#3cb3e91b3fe66baa68a12c85f39b9b40
+https://conda.anaconda.org/conda-forge/linux-64/sqlite-3.40.0-h4ff8645_0.tar.bz2#bb11803129cbbb53ed56f9506ff74145
+https://conda.anaconda.org/conda-forge/linux-64/python-3.7.12-hf930737_100_cpython.tar.bz2#416558a6f46b7a1fa8db7d0e98aff56a
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@ -68,7 +61,7 @@ https://conda.anaconda.org/conda-forge/noarch/parso-0.8.3-pyhd8ed1ab_0.tar.bz2#1
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 https://conda.anaconda.org/conda-forge/noarch/prometheus_client-0.16.0-pyhd8ed1ab_0.conda#8efaddc1c8b8ce262c4d1a7c6571c799
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+https://conda.anaconda.org/conda-forge/linux-64/psutil-5.9.3-py37h540881e_0.tar.bz2#0c813ad118e926df328bf74899a48047
 https://conda.anaconda.org/conda-forge/noarch/ptyprocess-0.7.0-pyhd3deb0d_0.tar.bz2#359eeb6536da0e687af562ed265ec263
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@ -86,7 +79,7 @@ https://conda.anaconda.org/conda-forge/noarch/six-1.16.0-pyh6c4a22f_0.tar.bz2#e5
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-https://conda.anaconda.org/conda-forge/linux-64/tornado-6.2-py310h5764c6d_1.tar.bz2#be4a201ac582c11d89ed7d15b3157cc3
+https://conda.anaconda.org/conda-forge/linux-64/tornado-6.2-py37h540881e_0.tar.bz2#2f0863ba6b29d1d2872b064dd697a492
 https://conda.anaconda.org/conda-forge/noarch/traitlets-5.9.0-pyhd8ed1ab_0.conda#d0b4f5c87cd35ac3fb3d47b223263a64
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@ -100,16 +93,14 @@ https://conda.anaconda.org/conda-forge/noarch/babel-2.11.0-pyhd8ed1ab_0.tar.bz2#
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-https://conda.anaconda.org/conda-forge/linux-64/cffi-1.15.1-py310h255011f_3.conda#800596144bb613cd7ac58b80900ce835
-https://conda.anaconda.org/conda-forge/noarch/comm-0.1.2-pyhd8ed1ab_0.conda#3c78af4752bb1600ebe5e83ef4588eaa
-https://conda.anaconda.org/conda-forge/noarch/importlib-metadata-6.0.0-pyha770c72_0.conda#691644becbcdca9f73243450b1c63e62
+https://conda.anaconda.org/conda-forge/linux-64/cffi-1.15.1-py37h43b0acd_1.tar.bz2#5111b64bdfdd72d85086ec49c952fe0d
+https://conda.anaconda.org/conda-forge/linux-64/importlib-metadata-4.11.4-py37h89c1867_0.tar.bz2#71107630527e4bd82932952351231efe
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 https://conda.anaconda.org/conda-forge/linux-64/ruamel.yaml-0.17.21-py310h5764c6d_2.tar.bz2#93643151fba5c31c676effdd7661f075
@ -139,13 +130,12 @@ https://conda.anaconda.org/conda-forge/noarch/ipython-8.9.0-pyh41d4057_0.conda#3
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-https://conda.anaconda.org/conda-forge/noarch/ipykernel-6.21.1-pyh210e3f2_0.conda#225e7869419b8bcae5d3165eba50204d
-https://conda.anaconda.org/conda-forge/noarch/nbclient-0.7.2-pyhd8ed1ab_0.conda#6c7b0d75b66a220274bb5a28c23197f2
+https://conda.anaconda.org/conda-forge/noarch/ipykernel-6.16.2-pyh210e3f2_0.tar.bz2#6b0f40821b784cac8a33d0c5eb7602c0
+https://conda.anaconda.org/conda-forge/noarch/nbconvert-core-7.2.9-pyhd8ed1ab_0.conda#a9e1826152e79416db71c51b0d3af28c
 https://conda.anaconda.org/conda-forge/noarch/requests-2.28.2-pyhd8ed1ab_0.conda#11d178fc55199482ee48d6812ea83983
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-https://conda.anaconda.org/conda-forge/noarch/jupyter_server-1.23.5-pyhd8ed1ab_0.conda#e3ae1d46749f48a1875b560fca41cb0c
+https://conda.anaconda.org/conda-forge/noarch/jupyter_server-1.23.4-pyhd8ed1ab_0.conda#35b7e9267926e864cc70ce137e6588ca
+https://conda.anaconda.org/conda-forge/noarch/jupyterhub-base-3.1.1-pyh2a2186d_0.conda#78fc5dfd4577a7ba172fa65eb64b6afb
 https://conda.anaconda.org/conda-forge/noarch/nbconvert-pandoc-7.2.9-pyhd8ed1ab_0.conda#4a8dc94c7c2f3736dc4b91ec345d5b4b
 https://conda.anaconda.org/conda-forge/noarch/jupyter-resource-usage-0.7.0-pyhd8ed1ab_0.conda#c57567d49d926826b1f852712ac8acfa
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@ -154,6 +144,6 @@ https://conda.anaconda.org/conda-forge/noarch/notebook-shim-0.2.2-pyhd8ed1ab_0.t
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-https://conda.anaconda.org/conda-forge/linux-64/jupyterhub-singleuser-1.5.0-py310hff52083_1.tar.bz2#1d878f40d50406b5aa51348b3e65525b
 https://conda.anaconda.org/conda-forge/noarch/jupyterlab-3.4.8-pyhd8ed1ab_0.tar.bz2#6fbf13b0e8a6fa24bbae91205e8ce467
 https://conda.anaconda.org/conda-forge/noarch/nteract_on_jupyter-2.1.3-py_0.tar.bz2#1430ccd983ae6b161e2fbf4377965f7a
+https://conda.anaconda.org/conda-forge/noarch/jupyterhub-singleuser-3.1.1-pyh2a2186d_0.conda#6d0a3394efe9ff7c0ad1ed03a6ca3720
--- a/repo2docker/buildpacks/conda/environment-linux-aarch64.lock
+++ b/repo2docker/buildpacks/conda/environment-linux-aarch64.lock
@ -1,8 +1,8 @@
-# AUTO GENERATED FROM environment.py-3.10.yml, DO NOT MANUALLY MODIFY
-# Frozen on 2023-02-03 15:07:35 UTC
+# AUTO GENERATED FROM environment.py-3.7.yml, DO NOT MANUALLY MODIFY
+# Frozen on 2023-02-03 12:33:35 UTC
 # Generated by conda-lock.
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--- a/repo2docker/buildpacks/conda/environment.py-3.10-linux-64.lock
+++ b/repo2docker/buildpacks/conda/environment.py-3.10-linux-64.lock
@ -1,8 +1,8 @@
 # AUTO GENERATED FROM environment.py-3.10.yml, DO NOT MANUALLY MODIFY
-# Frozen on 2023-02-03 15:07:27 UTC
+# Frozen on 2023-02-03 12:34:24 UTC
 # Generated by conda-lock.
 # platform: linux-64
-# input_hash: 319256a4b378b6d51346c17bd2d31c0d9cd69bc3c1d10cd858de62da107fc85a
+# input_hash: 9fd16b0f6d64e86a62e326694b74a429aef5dd7b227a96b4f0e2425851e4e016
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@ -57,7 +50,6 @@ https://conda.anaconda.org/conda-forge/noarch/idna-3.4-pyhd8ed1ab_0.tar.bz2#3427
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@ -143,7 +134,7 @@ https://conda.anaconda.org/conda-forge/noarch/ipykernel-6.21.1-pyh210e3f2_0.cond
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-https://conda.anaconda.org/conda-forge/linux-64/jupyterhub-base-1.5.0-py310hff52083_1.tar.bz2#3d2e9d7f52b0274fd4f9d608cfb750a5
+https://conda.anaconda.org/conda-forge/noarch/jupyterhub-base-3.1.1-pyh2a2186d_0.conda#78fc5dfd4577a7ba172fa65eb64b6afb
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@ -154,6 +145,6 @@ https://conda.anaconda.org/conda-forge/noarch/notebook-shim-0.2.2-pyhd8ed1ab_0.t
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 https://conda.anaconda.org/conda-forge/noarch/jupyterlab-3.4.8-pyhd8ed1ab_0.tar.bz2#6fbf13b0e8a6fa24bbae91205e8ce467
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+https://conda.anaconda.org/conda-forge/noarch/jupyterhub-singleuser-3.1.1-pyh2a2186d_0.conda#6d0a3394efe9ff7c0ad1ed03a6ca3720
--- a/repo2docker/buildpacks/conda/environment.py-3.10-linux-aarch64.lock
+++ b/repo2docker/buildpacks/conda/environment.py-3.10-linux-aarch64.lock
@ -1,8 +1,8 @@
 # AUTO GENERATED FROM environment.py-3.10.yml, DO NOT MANUALLY MODIFY
-# Frozen on 2023-02-03 15:07:35 UTC
+# Frozen on 2023-02-03 12:34:31 UTC
 # Generated by conda-lock.
 # platform: linux-aarch64
-# input_hash: 4dd12b320ba2374b960bac205f2959bbf4ab4eb619e697da06b2e952e403aee8
+# input_hash: c039d9a57d204f210d3832a8744df6e5ed536030655439a29ff883148f704b60
@EXPLICIT
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@ -14,10 +14,7 @@ https://conda.anaconda.org/conda-forge/noarch/tzdata-2022g-h191b570_0.conda#51fc
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@ -56,7 +49,6 @@ https://conda.anaconda.org/conda-forge/noarch/idna-3.4-pyhd8ed1ab_0.tar.bz2#3427
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@ -108,7 +100,6 @@ https://conda.anaconda.org/conda-forge/noarch/jinja2-3.1.2-pyhd8ed1ab_1.tar.bz2#
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@ -142,7 +133,7 @@ https://conda.anaconda.org/conda-forge/noarch/ipykernel-6.21.1-pyh210e3f2_0.cond
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+https://conda.anaconda.org/conda-forge/noarch/jupyterhub-base-3.1.1-pyh2a2186d_0.conda#78fc5dfd4577a7ba172fa65eb64b6afb
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+https://conda.anaconda.org/conda-forge/noarch/jupyterhub-singleuser-3.1.1-pyh2a2186d_0.conda#6d0a3394efe9ff7c0ad1ed03a6ca3720
--- a/repo2docker/buildpacks/conda/environment.py-3.10.yml
+++ b/repo2docker/buildpacks/conda/environment.py-3.10.yml
@ -1,5 +1,5 @@
 # AUTO GENERATED FROM environment.yml, DO NOT MANUALLY MODIFY
-# Generated on 2023-02-03 15:07:27 UTC
+# Generated on 2023-02-03 12:34:24 UTC
 channels:
 - conda-forge
 dependencies:
@ -10,6 +10,6 @@ dependencies:
 - jupyter-offlinenotebook==0.2.2
 - jupyter-resource-usage==0.7.0
 - jupyterlab==3.4.8
- jupyterhub-singleuser==1.5.0
+- jupyterhub-singleuser==3.1.1
 - notebook==6.4.12
 - nteract_on_jupyter==2.1.3
--- a/repo2docker/buildpacks/conda/environment.py-3.11-linux-64.lock
+++ b/repo2docker/buildpacks/conda/environment.py-3.11-linux-64.lock
@ -0,0 +1,150 @@
+# AUTO GENERATED FROM environment.py-3.11.yml, DO NOT MANUALLY MODIFY
+# Frozen on 2023-02-03 12:31:38 UTC
+# Generated by conda-lock.
+# platform: linux-64
+# input_hash: f7978ab1627d5ab9863bff89dd5c41d37073b0bac80171a2c092390857888902
+@EXPLICIT
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@ -0,0 +1,149 @@
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--- a/repo2docker/buildpacks/conda/environment.py-3.11.yml
+++ b/repo2docker/buildpacks/conda/environment.py-3.11.yml
@ -0,0 +1,15 @@
+# AUTO GENERATED FROM environment.yml, DO NOT MANUALLY MODIFY
+# Generated on 2023-02-03 12:31:38 UTC
+channels:
+- conda-forge
+dependencies:
+- python=3.11.*
+- nodejs=18
+- pip
+- ipywidgets==8.0.2
+- jupyter-offlinenotebook==0.2.2
+- jupyter-resource-usage==0.7.0
+- jupyterlab==3.4.8
+- jupyterhub-singleuser==3.1.1
+- notebook==6.4.12
+- nteract_on_jupyter==2.1.3
--- a/repo2docker/buildpacks/conda/environment.py-3.7-linux-64.lock
+++ b/repo2docker/buildpacks/conda/environment.py-3.7-linux-64.lock
@ -1,8 +1,8 @@
 # AUTO GENERATED FROM environment.py-3.7.yml, DO NOT MANUALLY MODIFY
-# Frozen on 2023-02-03 15:06:11 UTC
+# Frozen on 2023-02-03 12:33:27 UTC
 # Generated by conda-lock.
 # platform: linux-64
-# input_hash: b4b4f139f526207b20b517d99f02ed1e8358bfc241b21bf55f32edcc2c4a4a90
+# input_hash: 56d66ed1f6b5535bd09b3fb8546cc5bdb3cea65aa2ed89ffaf52424a63c739aa
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@ -68,7 +60,6 @@ https://conda.anaconda.org/conda-forge/noarch/prometheus_client-0.16.0-pyhd8ed1a
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@ -135,7 +126,7 @@ https://conda.anaconda.org/conda-forge/noarch/nbconvert-core-7.2.9-pyhd8ed1ab_0.
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+https://conda.anaconda.org/conda-forge/noarch/jupyterhub-base-3.1.1-pyh2a2186d_0.conda#78fc5dfd4577a7ba172fa65eb64b6afb
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-https://conda.anaconda.org/conda-forge/linux-64/jupyterhub-singleuser-1.5.0-py37h89c1867_1.tar.bz2#eb216c4866e66ddebfd0685c2ecd1702
 https://conda.anaconda.org/conda-forge/noarch/jupyterlab-3.4.8-pyhd8ed1ab_0.tar.bz2#6fbf13b0e8a6fa24bbae91205e8ce467
 https://conda.anaconda.org/conda-forge/noarch/nteract_on_jupyter-2.1.3-py_0.tar.bz2#1430ccd983ae6b161e2fbf4377965f7a
+https://conda.anaconda.org/conda-forge/noarch/jupyterhub-singleuser-3.1.1-pyh2a2186d_0.conda#6d0a3394efe9ff7c0ad1ed03a6ca3720
--- a/repo2docker/buildpacks/conda/environment.py-3.7-linux-aarch64.lock
+++ b/repo2docker/buildpacks/conda/environment.py-3.7-linux-aarch64.lock
@ -1,8 +1,8 @@
 # AUTO GENERATED FROM environment.py-3.7.yml, DO NOT MANUALLY MODIFY
-# Frozen on 2023-02-03 15:06:19 UTC
+# Frozen on 2023-02-03 12:33:35 UTC
 # Generated by conda-lock.
 # platform: linux-aarch64
-# input_hash: 1a33cb7d707b06912c70e2a457cf822145079324336fecebcbd81b4426e11f18
+# input_hash: 5d827030b8550a7c54b1799a2f8975f8c422c8cd7f555193fcd4912380c6d3cb
@EXPLICIT
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@ -12,10 +12,7 @@ https://conda.anaconda.org/conda-forge/linux-aarch64/pandoc-2.19.2-h8af1aa0_1.ta
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@ -24,18 +21,13 @@ https://conda.anaconda.org/conda-forge/linux-aarch64/libzlib-1.2.13-h4e544f5_4.t
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@ -67,7 +59,6 @@ https://conda.anaconda.org/conda-forge/noarch/prometheus_client-0.16.0-pyhd8ed1a
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@ -134,7 +125,7 @@ https://conda.anaconda.org/conda-forge/noarch/nbconvert-core-7.2.9-pyhd8ed1ab_0.
 https://conda.anaconda.org/conda-forge/noarch/requests-2.28.2-pyhd8ed1ab_0.conda#11d178fc55199482ee48d6812ea83983
 https://conda.anaconda.org/conda-forge/noarch/ipywidgets-8.0.2-pyhd8ed1ab_1.tar.bz2#81b7f46918555bf911ad2ba2f3259094
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-https://conda.anaconda.org/conda-forge/linux-aarch64/jupyterhub-base-1.5.0-py37hd9ded2f_1.tar.bz2#2cf4aee90c369db57f83d31ec8d92576
+https://conda.anaconda.org/conda-forge/noarch/jupyterhub-base-3.1.1-pyh2a2186d_0.conda#78fc5dfd4577a7ba172fa65eb64b6afb
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@ -143,6 +134,6 @@ https://conda.anaconda.org/conda-forge/noarch/notebook-shim-0.2.2-pyhd8ed1ab_0.t
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-https://conda.anaconda.org/conda-forge/linux-aarch64/jupyterhub-singleuser-1.5.0-py37hd9ded2f_1.tar.bz2#b4835a25344591dd4c538c66736c7b95
 https://conda.anaconda.org/conda-forge/noarch/jupyterlab-3.4.8-pyhd8ed1ab_0.tar.bz2#6fbf13b0e8a6fa24bbae91205e8ce467
 https://conda.anaconda.org/conda-forge/noarch/nteract_on_jupyter-2.1.3-py_0.tar.bz2#1430ccd983ae6b161e2fbf4377965f7a
+https://conda.anaconda.org/conda-forge/noarch/jupyterhub-singleuser-3.1.1-pyh2a2186d_0.conda#6d0a3394efe9ff7c0ad1ed03a6ca3720
--- a/repo2docker/buildpacks/conda/environment.py-3.7.yml
+++ b/repo2docker/buildpacks/conda/environment.py-3.7.yml
@ -1,5 +1,5 @@
 # AUTO GENERATED FROM environment.yml, DO NOT MANUALLY MODIFY
-# Generated on 2023-02-03 15:06:11 UTC
+# Generated on 2023-02-03 12:33:27 UTC
 channels:
 - conda-forge
 dependencies:
@ -10,6 +10,6 @@ dependencies:
 - jupyter-offlinenotebook==0.2.2
 - jupyter-resource-usage==0.7.0
 - jupyterlab==3.4.8
- jupyterhub-singleuser==1.5.0
+- jupyterhub-singleuser==3.1.1
 - notebook==6.4.12
 - nteract_on_jupyter==2.1.3
--- a/repo2docker/buildpacks/conda/environment.py-3.8-linux-64.lock
+++ b/repo2docker/buildpacks/conda/environment.py-3.8-linux-64.lock
@ -1,8 +1,8 @@
 # AUTO GENERATED FROM environment.py-3.8.yml, DO NOT MANUALLY MODIFY
-# Frozen on 2023-02-03 15:06:35 UTC
+# Frozen on 2023-02-03 12:32:57 UTC
 # Generated by conda-lock.
 # platform: linux-64
-# input_hash: 0048b595af5cd72e050ef379fcbf557d8b0fcd8591075981340a8abef068200d
+# input_hash: 2fe7881a5392503fd6a9f83c6e0faba6d5cc08834c94af8545dde81cf2a35991
@EXPLICIT
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@ -13,10 +13,7 @@ https://conda.anaconda.org/conda-forge/linux-64/libgomp-12.2.0-h65d4601_19.tar.b
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@ -26,16 +23,12 @@ https://conda.anaconda.org/conda-forge/linux-64/libzlib-1.2.13-h166bdaf_4.tar.bz
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@ -56,7 +49,6 @@ https://conda.anaconda.org/conda-forge/noarch/idna-3.4-pyhd8ed1ab_0.tar.bz2#3427
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@ -108,7 +100,6 @@ https://conda.anaconda.org/conda-forge/noarch/jinja2-3.1.2-pyhd8ed1ab_1.tar.bz2#
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+https://conda.anaconda.org/conda-forge/noarch/jupyterhub-base-3.1.1-pyh2a2186d_0.conda#78fc5dfd4577a7ba172fa65eb64b6afb
 https://conda.anaconda.org/conda-forge/noarch/nbconvert-core-7.2.9-pyhd8ed1ab_0.conda#a9e1826152e79416db71c51b0d3af28c
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 https://conda.anaconda.org/conda-forge/noarch/nbconvert-pandoc-7.2.9-pyhd8ed1ab_0.conda#4a8dc94c7c2f3736dc4b91ec345d5b4b
@ -153,6 +144,6 @@ https://conda.anaconda.org/conda-forge/noarch/notebook-shim-0.2.2-pyhd8ed1ab_0.t
 https://conda.anaconda.org/conda-forge/noarch/nbclassic-0.5.1-pyhd8ed1ab_0.conda#cf832e3d48ef22528c676ed6e4b4085a
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 https://conda.anaconda.org/conda-forge/noarch/jupyterlab-3.4.8-pyhd8ed1ab_0.tar.bz2#6fbf13b0e8a6fa24bbae91205e8ce467
 https://conda.anaconda.org/conda-forge/noarch/nteract_on_jupyter-2.1.3-py_0.tar.bz2#1430ccd983ae6b161e2fbf4377965f7a
+https://conda.anaconda.org/conda-forge/noarch/jupyterhub-singleuser-3.1.1-pyh2a2186d_0.conda#6d0a3394efe9ff7c0ad1ed03a6ca3720
--- a/repo2docker/buildpacks/conda/environment.py-3.8-linux-aarch64.lock
+++ b/repo2docker/buildpacks/conda/environment.py-3.8-linux-aarch64.lock
@ -1,8 +1,8 @@
 # AUTO GENERATED FROM environment.py-3.8.yml, DO NOT MANUALLY MODIFY
-# Frozen on 2023-02-03 15:06:43 UTC
+# Frozen on 2023-02-03 12:33:06 UTC
 # Generated by conda-lock.
 # platform: linux-aarch64
-# input_hash: e15c184db7778c9d459f342a571a0a3bd54ad18d0aa68543d894b933f2fe0d63
+# input_hash: 49ac68894a6f3d26b7563dc8c14578743db85f571df2b05b7ed977c7084b8f35
@EXPLICIT
 https://conda.anaconda.org/conda-forge/linux-aarch64/ca-certificates-2022.12.7-h4fd8a4c_0.conda#2450fbcaf65634e0d071e47e2b8487b4
 https://conda.anaconda.org/conda-forge/linux-aarch64/ld_impl_linux-aarch64-2.40-h2d8c526_0.conda#16246d69e945d0b1969a6099e7c5d457
@ -13,10 +13,7 @@ https://conda.anaconda.org/conda-forge/linux-aarch64/python_abi-3.8-3_cp38.conda
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@ -26,15 +23,11 @@ https://conda.anaconda.org/conda-forge/linux-aarch64/libzlib-1.2.13-h4e544f5_4.t
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-https://conda.anaconda.org/conda-forge/linux-aarch64/krb5-1.20.1-h113d92e_0.conda#c0ac34c76019d6ebfef2d47a5687459c
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@ -55,7 +48,6 @@ https://conda.anaconda.org/conda-forge/noarch/idna-3.4-pyhd8ed1ab_0.tar.bz2#3427
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@ -107,7 +99,6 @@ https://conda.anaconda.org/conda-forge/noarch/jinja2-3.1.2-pyhd8ed1ab_1.tar.bz2#
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-https://conda.anaconda.org/conda-forge/linux-aarch64/pycurl-7.45.1-py38hea9cc65_3.tar.bz2#d2e7e531bcc5594e0bd9e7557073f539
 https://conda.anaconda.org/conda-forge/noarch/pygments-2.14.0-pyhd8ed1ab_0.conda#c78cd16b11cd6a295484bd6c8f24bea1
 https://conda.anaconda.org/conda-forge/noarch/python-dateutil-2.8.2-pyhd8ed1ab_0.tar.bz2#dd999d1cc9f79e67dbb855c8924c7984
 https://conda.anaconda.org/conda-forge/linux-aarch64/ruamel.yaml-0.17.21-py38hdacc76a_2.tar.bz2#a1e938c091531d381cd378312af7c9d1
@ -141,7 +132,7 @@ https://conda.anaconda.org/conda-forge/noarch/ipykernel-6.21.1-pyh210e3f2_0.cond
 https://conda.anaconda.org/conda-forge/noarch/nbclient-0.7.2-pyhd8ed1ab_0.conda#6c7b0d75b66a220274bb5a28c23197f2
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-https://conda.anaconda.org/conda-forge/linux-aarch64/jupyterhub-base-1.5.0-py38h2063c64_1.tar.bz2#876f306e7abefb3c6269feef88a9f867
+https://conda.anaconda.org/conda-forge/noarch/jupyterhub-base-3.1.1-pyh2a2186d_0.conda#78fc5dfd4577a7ba172fa65eb64b6afb
 https://conda.anaconda.org/conda-forge/noarch/nbconvert-core-7.2.9-pyhd8ed1ab_0.conda#a9e1826152e79416db71c51b0d3af28c
 https://conda.anaconda.org/conda-forge/noarch/jupyter_server-1.23.5-pyhd8ed1ab_0.conda#e3ae1d46749f48a1875b560fca41cb0c
 https://conda.anaconda.org/conda-forge/noarch/nbconvert-pandoc-7.2.9-pyhd8ed1ab_0.conda#4a8dc94c7c2f3736dc4b91ec345d5b4b
@ -152,6 +143,6 @@ https://conda.anaconda.org/conda-forge/noarch/notebook-shim-0.2.2-pyhd8ed1ab_0.t
 https://conda.anaconda.org/conda-forge/noarch/nbclassic-0.5.1-pyhd8ed1ab_0.conda#cf832e3d48ef22528c676ed6e4b4085a
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 https://conda.anaconda.org/conda-forge/noarch/jupyterlab-3.4.8-pyhd8ed1ab_0.tar.bz2#6fbf13b0e8a6fa24bbae91205e8ce467
 https://conda.anaconda.org/conda-forge/noarch/nteract_on_jupyter-2.1.3-py_0.tar.bz2#1430ccd983ae6b161e2fbf4377965f7a
+https://conda.anaconda.org/conda-forge/noarch/jupyterhub-singleuser-3.1.1-pyh2a2186d_0.conda#6d0a3394efe9ff7c0ad1ed03a6ca3720
--- a/repo2docker/buildpacks/conda/environment.py-3.8.yml
+++ b/repo2docker/buildpacks/conda/environment.py-3.8.yml
@ -1,5 +1,5 @@
 # AUTO GENERATED FROM environment.yml, DO NOT MANUALLY MODIFY
-# Generated on 2023-02-03 15:06:35 UTC
+# Generated on 2023-02-03 12:32:57 UTC
 channels:
 - conda-forge
 dependencies:
@ -10,6 +10,6 @@ dependencies:
 - jupyter-offlinenotebook==0.2.2
 - jupyter-resource-usage==0.7.0
 - jupyterlab==3.4.8
- jupyterhub-singleuser==1.5.0
+- jupyterhub-singleuser==3.1.1
 - notebook==6.4.12
 - nteract_on_jupyter==2.1.3
--- a/repo2docker/buildpacks/conda/environment.py-3.9-linux-64.lock
+++ b/repo2docker/buildpacks/conda/environment.py-3.9-linux-64.lock
@ -1,8 +1,8 @@
 # AUTO GENERATED FROM environment.py-3.9.yml, DO NOT MANUALLY MODIFY
-# Frozen on 2023-02-03 15:07:03 UTC
+# Frozen on 2023-02-03 12:34:00 UTC
 # Generated by conda-lock.
 # platform: linux-64
-# input_hash: 7f7fc460068d618879d5a59d02e2ed8cdeda20ec3692dc18b5ded1cb5a4fd1eb
+# input_hash: 579c1dd71f26268bb3c6470a6fbedf23ee639f53ae70be703248160e72e6ccdf
@EXPLICIT
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@ -14,10 +14,7 @@ https://conda.anaconda.org/conda-forge/linux-64/libgomp-12.2.0-h65d4601_19.tar.b
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@ -27,16 +24,12 @@ https://conda.anaconda.org/conda-forge/linux-64/libzlib-1.2.13-h166bdaf_4.tar.bz
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@ -109,7 +101,6 @@ https://conda.anaconda.org/conda-forge/noarch/jinja2-3.1.2-pyhd8ed1ab_1.tar.bz2#
 https://conda.anaconda.org/conda-forge/noarch/matplotlib-inline-0.1.6-pyhd8ed1ab_0.tar.bz2#b21613793fcc81d944c76c9f2864a7de
 https://conda.anaconda.org/conda-forge/noarch/pexpect-4.8.0-pyh1a96a4e_2.tar.bz2#330448ce4403cc74990ac07c555942a1
 https://conda.anaconda.org/conda-forge/noarch/pip-23.0-pyhd8ed1ab_0.conda#85b35999162ec95f9f999bac15279c02
-https://conda.anaconda.org/conda-forge/linux-64/pycurl-7.45.1-py39h9297c8b_3.tar.bz2#5f579a76244c9c14094092572a399279
 https://conda.anaconda.org/conda-forge/noarch/pygments-2.14.0-pyhd8ed1ab_0.conda#c78cd16b11cd6a295484bd6c8f24bea1
 https://conda.anaconda.org/conda-forge/noarch/python-dateutil-2.8.2-pyhd8ed1ab_0.tar.bz2#dd999d1cc9f79e67dbb855c8924c7984
 https://conda.anaconda.org/conda-forge/linux-64/ruamel.yaml-0.17.21-py39hb9d737c_2.tar.bz2#51ad16ab9c63e5d14145f34adbbacf70
@ -143,7 +134,7 @@ https://conda.anaconda.org/conda-forge/noarch/ipykernel-6.21.1-pyh210e3f2_0.cond
 https://conda.anaconda.org/conda-forge/noarch/nbclient-0.7.2-pyhd8ed1ab_0.conda#6c7b0d75b66a220274bb5a28c23197f2
 https://conda.anaconda.org/conda-forge/noarch/requests-2.28.2-pyhd8ed1ab_0.conda#11d178fc55199482ee48d6812ea83983
 https://conda.anaconda.org/conda-forge/noarch/ipywidgets-8.0.2-pyhd8ed1ab_1.tar.bz2#81b7f46918555bf911ad2ba2f3259094
-https://conda.anaconda.org/conda-forge/linux-64/jupyterhub-base-1.5.0-py39hf3d152e_1.tar.bz2#992fc6e337a76ea7717d825d7e799d19
+https://conda.anaconda.org/conda-forge/noarch/jupyterhub-base-3.1.1-pyh2a2186d_0.conda#78fc5dfd4577a7ba172fa65eb64b6afb
 https://conda.anaconda.org/conda-forge/noarch/nbconvert-core-7.2.9-pyhd8ed1ab_0.conda#a9e1826152e79416db71c51b0d3af28c
 https://conda.anaconda.org/conda-forge/noarch/jupyter_server-1.23.5-pyhd8ed1ab_0.conda#e3ae1d46749f48a1875b560fca41cb0c
 https://conda.anaconda.org/conda-forge/noarch/nbconvert-pandoc-7.2.9-pyhd8ed1ab_0.conda#4a8dc94c7c2f3736dc4b91ec345d5b4b
@ -154,6 +145,6 @@ https://conda.anaconda.org/conda-forge/noarch/notebook-shim-0.2.2-pyhd8ed1ab_0.t
 https://conda.anaconda.org/conda-forge/noarch/nbclassic-0.5.1-pyhd8ed1ab_0.conda#cf832e3d48ef22528c676ed6e4b4085a
 https://conda.anaconda.org/conda-forge/noarch/notebook-6.4.12-pyha770c72_0.tar.bz2#77fc67c5bbea44fd41e8bbe2ac82d1ad
 https://conda.anaconda.org/conda-forge/noarch/jupyter-offlinenotebook-0.2.2-pyh1d7be83_0.tar.bz2#fe55056ce4bc4bd4953ba440270735fb
-https://conda.anaconda.org/conda-forge/linux-64/jupyterhub-singleuser-1.5.0-py39hf3d152e_1.tar.bz2#31dba5dc15564c19d36836786fafe297
 https://conda.anaconda.org/conda-forge/noarch/jupyterlab-3.4.8-pyhd8ed1ab_0.tar.bz2#6fbf13b0e8a6fa24bbae91205e8ce467
 https://conda.anaconda.org/conda-forge/noarch/nteract_on_jupyter-2.1.3-py_0.tar.bz2#1430ccd983ae6b161e2fbf4377965f7a
+https://conda.anaconda.org/conda-forge/noarch/jupyterhub-singleuser-3.1.1-pyh2a2186d_0.conda#6d0a3394efe9ff7c0ad1ed03a6ca3720
--- a/repo2docker/buildpacks/conda/environment.py-3.9-linux-aarch64.lock
+++ b/repo2docker/buildpacks/conda/environment.py-3.9-linux-aarch64.lock
@ -1,8 +1,8 @@
 # AUTO GENERATED FROM environment.py-3.9.yml, DO NOT MANUALLY MODIFY
-# Frozen on 2023-02-03 15:07:11 UTC
+# Frozen on 2023-02-03 12:34:07 UTC
 # Generated by conda-lock.
 # platform: linux-aarch64
-# input_hash: d6b6cce54dd9a3903815038f59f97f8fd6f16f94de731496067d0c7cd993ef5f
+# input_hash: 5d969695d1fb1e159afd55142ca58e173ba124b10a7223b9f8686786800aef5e
@EXPLICIT
 https://conda.anaconda.org/conda-forge/linux-aarch64/ca-certificates-2022.12.7-h4fd8a4c_0.conda#2450fbcaf65634e0d071e47e2b8487b4
 https://conda.anaconda.org/conda-forge/linux-aarch64/ld_impl_linux-aarch64-2.40-h2d8c526_0.conda#16246d69e945d0b1969a6099e7c5d457
@ -14,10 +14,7 @@ https://conda.anaconda.org/conda-forge/noarch/tzdata-2022g-h191b570_0.conda#51fc
 https://conda.anaconda.org/conda-forge/linux-aarch64/_openmp_mutex-4.5-2_gnu.tar.bz2#6168d71addc746e8f2b8d57dfd2edcea
 https://conda.anaconda.org/conda-forge/linux-aarch64/libgcc-ng-12.2.0-h607ecd0_19.tar.bz2#8456a29b6d9fc3123ccb9a966b6b2c49
 https://conda.anaconda.org/conda-forge/linux-aarch64/bzip2-1.0.8-hf897c2e_4.tar.bz2#2d787570a729e273a4e75775ddf3348a
-https://conda.anaconda.org/conda-forge/linux-aarch64/c-ares-1.18.1-hf897c2e_0.tar.bz2#12c54b174dd7c6a9331e729d24c39515
 https://conda.anaconda.org/conda-forge/linux-aarch64/icu-70.1-ha18d298_0.tar.bz2#014656d28b7b6f8a566437c69552f9ae
-https://conda.anaconda.org/conda-forge/linux-aarch64/keyutils-1.6.1-h4e544f5_0.tar.bz2#1f24853e59c68892452ef94ddd8afd4b
-https://conda.anaconda.org/conda-forge/linux-aarch64/libev-4.33-h516909a_1.tar.bz2#9eac5901791494108c9b9ab85ca8aa93
 https://conda.anaconda.org/conda-forge/linux-aarch64/libffi-3.4.2-h3557bc0_5.tar.bz2#dddd85f4d52121fab0a8b099c5e06501
 https://conda.anaconda.org/conda-forge/linux-aarch64/libnsl-2.0.0-hf897c2e_0.tar.bz2#36fdbc05c9d9145ece86f5a63c3f352e
 https://conda.anaconda.org/conda-forge/linux-aarch64/libsodium-1.0.18-hb9de7d4_1.tar.bz2#d09ab3c60eebb6f14eb4d07e172775cc
@ -27,15 +24,11 @@ https://conda.anaconda.org/conda-forge/linux-aarch64/libzlib-1.2.13-h4e544f5_4.t
 https://conda.anaconda.org/conda-forge/linux-aarch64/ncurses-6.3-headf329_1.tar.bz2#486b68148e121bc8bbadc3cefae4c04f
 https://conda.anaconda.org/conda-forge/linux-aarch64/openssl-3.0.7-hb4cce97_2.conda#ace4ef3f75947c9ccfc413a4507fc4fe
 https://conda.anaconda.org/conda-forge/linux-aarch64/xz-5.2.6-h9cdd2b7_0.tar.bz2#83baad393a31d59c20b63ba4da6592df
-https://conda.anaconda.org/conda-forge/linux-aarch64/libedit-3.1.20191231-he28a2e2_2.tar.bz2#29371161d77933a54fccf1bb66b96529
-https://conda.anaconda.org/conda-forge/linux-aarch64/libnghttp2-1.51.0-h674c3cc_0.conda#b0a33bcd7b010a9f77eba331173a97be
 https://conda.anaconda.org/conda-forge/linux-aarch64/libsqlite-3.40.0-hf9034f9_0.tar.bz2#9afb0d5dbaa403858a660cd0b4a31d29
-https://conda.anaconda.org/conda-forge/linux-aarch64/libssh2-1.10.0-he5a64b1_3.tar.bz2#97a05afae73dc8939078f44732534a47
 https://conda.anaconda.org/conda-forge/linux-aarch64/readline-8.1.2-h38e3740_0.tar.bz2#3cdbfb7d7b63ae2c2d35bb167d257ecd
 https://conda.anaconda.org/conda-forge/linux-aarch64/tk-8.6.12-hd8af866_0.tar.bz2#7894e82ff743bd96c76585ddebe28e2a
 https://conda.anaconda.org/conda-forge/linux-aarch64/zeromq-4.3.4-h01db608_1.tar.bz2#dd56c9ce3f1f689a5e71941830349279
 https://conda.anaconda.org/conda-forge/linux-aarch64/zlib-1.2.13-h4e544f5_4.tar.bz2#dc8395f4a79bb0b13ca7d855c72482d4
-https://conda.anaconda.org/conda-forge/linux-aarch64/krb5-1.20.1-h113d92e_0.conda#c0ac34c76019d6ebfef2d47a5687459c
 https://conda.anaconda.org/conda-forge/linux-aarch64/nodejs-18.12.1-h928fb59_0.tar.bz2#b0ff8fc996c6e50ac2b3e1a5dcc14d34
 https://conda.anaconda.org/conda-forge/linux-aarch64/python-3.9.16-hb363c5e_0_cpython.conda#0a7ef29549eaef817898062eeeefebd3
 https://conda.anaconda.org/conda-forge/noarch/async_generator-1.10-py_0.tar.bz2#d56c596e61b1c4952acf0a9920856c12
@ -56,7 +49,6 @@ https://conda.anaconda.org/conda-forge/noarch/idna-3.4-pyhd8ed1ab_0.tar.bz2#3427
 https://conda.anaconda.org/conda-forge/noarch/ipython_genutils-0.2.0-py_1.tar.bz2#5071c982548b3a20caf70462f04f5287
 https://conda.anaconda.org/conda-forge/noarch/json5-0.9.5-pyh9f0ad1d_0.tar.bz2#10759827a94e6b14996e81fb002c0bda
 https://conda.anaconda.org/conda-forge/noarch/jupyterlab_widgets-3.0.5-pyhd8ed1ab_0.conda#953a312b272f37d39fe9d09f46734622
-https://conda.anaconda.org/conda-forge/linux-aarch64/libcurl-7.87.0-h6ad7c7a_0.conda#6e8310f3e0b523e64faa9012d4151ff0
 https://conda.anaconda.org/conda-forge/linux-aarch64/markupsafe-2.1.2-py39h599bc27_0.conda#13af483192015190404fede49f1a306e
 https://conda.anaconda.org/conda-forge/noarch/mistune-2.0.4-pyhd8ed1ab_0.tar.bz2#78e0a90393b79b378b8ff6d32893d58a
 https://conda.anaconda.org/conda-forge/noarch/nest-asyncio-1.5.6-pyhd8ed1ab_0.tar.bz2#7b868f21adde0d9b8b38f9c16836589b
@ -108,7 +100,6 @@ https://conda.anaconda.org/conda-forge/noarch/jinja2-3.1.2-pyhd8ed1ab_1.tar.bz2#
 https://conda.anaconda.org/conda-forge/noarch/matplotlib-inline-0.1.6-pyhd8ed1ab_0.tar.bz2#b21613793fcc81d944c76c9f2864a7de
 https://conda.anaconda.org/conda-forge/noarch/pexpect-4.8.0-pyh1a96a4e_2.tar.bz2#330448ce4403cc74990ac07c555942a1
 https://conda.anaconda.org/conda-forge/noarch/pip-23.0-pyhd8ed1ab_0.conda#85b35999162ec95f9f999bac15279c02
-https://conda.anaconda.org/conda-forge/linux-aarch64/pycurl-7.45.1-py39h8b5e024_3.tar.bz2#08d1b183f4500bc6c997834f0792f2d5
 https://conda.anaconda.org/conda-forge/noarch/pygments-2.14.0-pyhd8ed1ab_0.conda#c78cd16b11cd6a295484bd6c8f24bea1
 https://conda.anaconda.org/conda-forge/noarch/python-dateutil-2.8.2-pyhd8ed1ab_0.tar.bz2#dd999d1cc9f79e67dbb855c8924c7984
 https://conda.anaconda.org/conda-forge/linux-aarch64/ruamel.yaml-0.17.21-py39h0fd3b05_2.tar.bz2#4b9ac9e359dda56d809904a90b89a414
@ -142,7 +133,7 @@ https://conda.anaconda.org/conda-forge/noarch/ipykernel-6.21.1-pyh210e3f2_0.cond
 https://conda.anaconda.org/conda-forge/noarch/nbclient-0.7.2-pyhd8ed1ab_0.conda#6c7b0d75b66a220274bb5a28c23197f2
 https://conda.anaconda.org/conda-forge/noarch/requests-2.28.2-pyhd8ed1ab_0.conda#11d178fc55199482ee48d6812ea83983
 https://conda.anaconda.org/conda-forge/noarch/ipywidgets-8.0.2-pyhd8ed1ab_1.tar.bz2#81b7f46918555bf911ad2ba2f3259094
-https://conda.anaconda.org/conda-forge/linux-aarch64/jupyterhub-base-1.5.0-py39ha65689a_1.tar.bz2#4a9725abb86dbd756dc201db57022055
+https://conda.anaconda.org/conda-forge/noarch/jupyterhub-base-3.1.1-pyh2a2186d_0.conda#78fc5dfd4577a7ba172fa65eb64b6afb
 https://conda.anaconda.org/conda-forge/noarch/nbconvert-core-7.2.9-pyhd8ed1ab_0.conda#a9e1826152e79416db71c51b0d3af28c
 https://conda.anaconda.org/conda-forge/noarch/jupyter_server-1.23.5-pyhd8ed1ab_0.conda#e3ae1d46749f48a1875b560fca41cb0c
 https://conda.anaconda.org/conda-forge/noarch/nbconvert-pandoc-7.2.9-pyhd8ed1ab_0.conda#4a8dc94c7c2f3736dc4b91ec345d5b4b
@ -153,6 +144,6 @@ https://conda.anaconda.org/conda-forge/noarch/notebook-shim-0.2.2-pyhd8ed1ab_0.t
 https://conda.anaconda.org/conda-forge/noarch/nbclassic-0.5.1-pyhd8ed1ab_0.conda#cf832e3d48ef22528c676ed6e4b4085a
 https://conda.anaconda.org/conda-forge/noarch/notebook-6.4.12-pyha770c72_0.tar.bz2#77fc67c5bbea44fd41e8bbe2ac82d1ad
 https://conda.anaconda.org/conda-forge/noarch/jupyter-offlinenotebook-0.2.2-pyh1d7be83_0.tar.bz2#fe55056ce4bc4bd4953ba440270735fb
-https://conda.anaconda.org/conda-forge/linux-aarch64/jupyterhub-singleuser-1.5.0-py39ha65689a_1.tar.bz2#428f24f44794a428a875ee08be6eee31
 https://conda.anaconda.org/conda-forge/noarch/jupyterlab-3.4.8-pyhd8ed1ab_0.tar.bz2#6fbf13b0e8a6fa24bbae91205e8ce467
 https://conda.anaconda.org/conda-forge/noarch/nteract_on_jupyter-2.1.3-py_0.tar.bz2#1430ccd983ae6b161e2fbf4377965f7a
+https://conda.anaconda.org/conda-forge/noarch/jupyterhub-singleuser-3.1.1-pyh2a2186d_0.conda#6d0a3394efe9ff7c0ad1ed03a6ca3720
--- a/repo2docker/buildpacks/conda/environment.py-3.9.yml
+++ b/repo2docker/buildpacks/conda/environment.py-3.9.yml
@ -1,5 +1,5 @@
 # AUTO GENERATED FROM environment.yml, DO NOT MANUALLY MODIFY
-# Generated on 2023-02-03 15:07:03 UTC
+# Generated on 2023-02-03 12:34:00 UTC
 channels:
 - conda-forge
 dependencies:
@ -10,6 +10,6 @@ dependencies:
 - jupyter-offlinenotebook==0.2.2
 - jupyter-resource-usage==0.7.0
 - jupyterlab==3.4.8
- jupyterhub-singleuser==1.5.0
+- jupyterhub-singleuser==3.1.1
 - notebook==6.4.12
 - nteract_on_jupyter==2.1.3
--- a/repo2docker/buildpacks/conda/environment.yml
+++ b/repo2docker/buildpacks/conda/environment.yml
@ -8,6 +8,6 @@ dependencies:
  - jupyter-offlinenotebook==0.2.2
  - jupyter-resource-usage==0.7.0
  - jupyterlab==3.4.8
-  - jupyterhub-singleuser==1.5.0
+  - jupyterhub-singleuser==3.1.1
  - notebook==6.4.12
  - nteract_on_jupyter==2.1.3
--- a/repo2docker/buildpacks/conda/freeze.py
+++ b/repo2docker/buildpacks/conda/freeze.py
@ -117,7 +117,7 @@ if __name__ == "__main__":
        "py",
        nargs="*",
        help="Python version(s) to update and freeze",
-        default=("3.7", "3.8", "3.9", "3.10"),
+        default=("3.7", "3.8", "3.9", "3.10", "3.11"),
    )
    parser.add_argument(
        "platform",
--- a/repo2docker/buildpacks/conda/requirements.py-3.5.pip
+++ b/repo2docker/buildpacks/conda/requirements.py-3.5.pip
@ -1,17 +0,0 @@
-# pip-installed packages for Python 3.5
-# these should only be packages
-# whose versions are too new to have builds available for Python 3.5
-alembic==1.0.3
-async-generator==1.10
-chardet==3.0.4
-idna==2.7
-jupyterhub==0.9.4
-mako==1.0.7
-notebook==5.7.8
-nteract-on-jupyter==1.9.6
-pamela==0.3.0
-python-editor==1.0.3
-python-oauth2==1.1.0
-requests==2.20.1
-sqlalchemy==1.2.14
-urllib3==1.24.1
--- a/repo2docker/buildpacks/julia/julia_require.py
+++ b/repo2docker/buildpacks/julia/julia_require.py
@ -82,6 +82,14 @@ class JuliaRequireBuildPack(PythonBuildPack):
        else:
            julia_arch = "x86_64"
            julia_arch_short = "x64"
+
+        if V(self.julia_version) < V("0.7"):
+            # IJulia with Julia 0.6 isn't compatible with more recent jupyter-core
+            # point it to the one in the kernel env
+            # I _think_ this is only relevant during installation
+            jupyter = "${KERNEL_PYTHON_PREFIX}/bin/jupyter"
+        else:
+            jupyter = "${NB_PYTHON_PREFIX}/bin/jupyter"
        return super().get_build_env() + [
            ("JULIA_PATH", "${APP_BASE}/julia"),
            ("JULIA_HOME", "${JULIA_PATH}/bin"),  # julia <= 0.6
@ -91,7 +99,7 @@ class JuliaRequireBuildPack(PythonBuildPack):
            ("JULIA_VERSION", self.julia_version),
            ("JULIA_ARCH", julia_arch),
            ("JULIA_ARCH_SHORT", julia_arch_short),
-            ("JUPYTER", "${NB_PYTHON_PREFIX}/bin/jupyter"),
+            ("JUPYTER", jupyter),
        ]

    def get_path(self):
--- a/repo2docker/buildpacks/nix/install-nix.bash
+++ b/repo2docker/buildpacks/nix/install-nix.bash
@ -2,11 +2,11 @@
 # This downloads and installs a pinned version of nix
 set -ex

-NIX_VERSION="2.3.9"
+NIX_VERSION="2.13.2"
 if [ "$NIX_ARCH" = "aarch64" ]; then
-  NIX_SHA256="733a26911193fdd44d5d68342075af5924d8c0701aae877e51a38d74ee9f4ff8"
+  NIX_SHA256="4ae275a46a2441d3459ae389a90ce6e8f7eff12c2a084b2d003ba6f8d0899603"
 else
-  NIX_SHA256="49763fd7fa06bcb712ced2f3f11afd275e3a4d7bc5ff0d6fd1d50a4c3ce7bbf4"
+  NIX_SHA256="beaec0f28899c22f33adbe30e4ecfceef87b797278c5210ee693e22e9719dfb4"
 fi

 # Do all our operations in /tmp, since we can't rely on current directory being writeable yet.
--- a/repo2docker/buildpacks/pipfile/init.py
+++ b/repo2docker/buildpacks/pipfile/init.py
@ -113,8 +113,8 @@ class PipfileBuildPack(CondaBuildPack):
        # environment.
        assemble_scripts = super().get_assemble_scripts()

-        if self.py2:
-            # using Python 2 as a kernel, but Python 3 for the notebook server
+        if self.separate_kernel_env:
+            # using legacy Python (e.g. 2.7) as a kernel

            # requirements3.txt allows for packages to be installed to the
            # notebook servers Python environment
--- a/repo2docker/buildpacks/python/init.py
+++ b/repo2docker/buildpacks/python/init.py
@ -45,8 +45,8 @@ class PythonBuildPack(CondaBuildPack):
        # whether it's distinct from the notebook or the same.
        pip = "${KERNEL_PYTHON_PREFIX}/bin/pip"
        scripts = []
-        if self.py2:
-            # using python 2 kernel,
+        if self.separate_kernel_env:
+            # using legacy Python kernel
            # requirements3.txt allows installation in the notebook server env
            nb_requirements_file = self.binder_path("requirements3.txt")
            if os.path.exists(nb_requirements_file):
--- a/tests/conda/py35-binder-dir/verify
+++ b/tests/conda/py35-binder-dir/verify
@ -1,17 +1,28 @@
 #!/usr/bin/env python
+import os
 import sys
-from subprocess import check_output
+from subprocess import STDOUT, check_output

-assert sys.version_info[:2] == (3, 5), sys.version
+assert sys.version_info[:2] == (3, 7), sys.version

-out = check_output(["micromamba", "--version"]).decode("utf8").strip()
+
+def sh(cmd, **kwargs):
+    return check_output(cmd, **kwargs).decode("utf8").strip()
+
+
+kernel_python = os.path.join(os.environ["KERNEL_PYTHON_PREFIX"], "bin", "python")
+out = sh([kernel_python, "--version"], stderr=STDOUT)
+v = out.split()[1]
+assert v[:3] == "3.5", out
+
+out = sh(["micromamba", "--version"])
 assert out == "1.1.0", out

-out = check_output(["mamba", "--version"]).decode("utf8").strip()
+out = sh(["mamba", "--version"])
 assert (
    out
    == """mamba 1.1.0
 conda 4.13.0"""
 ), out

-import numpy
+sh([kernel_python, "-c", "import numpy"])
--- a/tests/conda/py36-postBuild/environment.yml
+++ b/tests/conda/py36-postBuild/environment.yml
@ -0,0 +1,3 @@
+dependencies:
+  - python=3.6
+  - numpy
--- a/tests/conda/py36-postBuild/postBuild
+++ b/tests/conda/py36-postBuild/postBuild
@ -0,0 +1,9 @@
+#!/bin/bash
+set -ex
+
+# mamba/conda installs in kernel env
+mamba install -y make
+
+# note `pip` on path is _not_ the kernel env!
+# is this what we (or users) want?
+pip install pytest
--- a/tests/conda/py36-postBuild/verify
+++ b/tests/conda/py36-postBuild/verify
@ -0,0 +1,3 @@
+#!/bin/bash
+set -ex
+pytest -vs ./verify.py
--- a/tests/conda/py36-postBuild/verify.py
+++ b/tests/conda/py36-postBuild/verify.py
@ -0,0 +1,85 @@
+"""
+tests to be run with pytest inside the container
+
+can't be called test_whatever.py because then _host_ pytest will try to run it!
+"""
+
+import json
+import os
+import shutil
+from subprocess import check_output
+
+from pytest import fixture
+
+kernel_prefix = os.environ.get("KERNEL_PYTHON_PREFIX")
+server_prefix = os.environ.get("NB_PYTHON_PREFIX")
+
+
+def json_cmd(cmd):
+    """Run a command and decode its JSON output"""
+    out = check_output(cmd)
+    return json.loads(out.decode("utf8", "replace"))
+
+
+def conda_pkgs(prefix):
+    """Conda package list as a dict"""
+    conda_json = json_cmd(["conda", "list", "--json", "-p", prefix])
+    return {pkg["name"]: pkg for pkg in conda_json}
+
+
+def pip_pkgs(prefix):
+    """Pip package list as a dict"""
+    pip_json = json_cmd([f"{prefix}/bin/pip", "list", "--format=json"])
+    return {pkg["name"]: pkg for pkg in pip_json}
+
+
+@fixture(scope="session")
+def kernel_conda():
+    return conda_pkgs(kernel_prefix)
+
+
+@fixture(scope="session")
+def server_conda():
+    return conda_pkgs(server_prefix)
+
+
+@fixture(scope="session")
+def kernel_pip():
+    return pip_pkgs(kernel_prefix)
+
+
+@fixture(scope="session")
+def server_pip():
+    return pip_pkgs(server_prefix)
+
+
+def test_which_python():
+    # server python comes first. Is this expected?
+    assert shutil.which("python3") == f"{server_prefix}/bin/python3"
+
+
+def test_kernel_env(kernel_conda):
+    assert kernel_prefix != server_prefix
+    kernel_python = kernel_conda["python"]["version"]
+    assert kernel_python[:3] == "3.6"
+    # test environment.yml packages
+    assert "numpy" in kernel_conda
+
+
+def test_server_env(server_conda):
+    # this should be the default version
+    # it will need updating when the default changes
+    assert server_conda["python"]["version"][:3] == "3.7"
+
+
+def test_conda_install(kernel_conda, server_conda):
+    # test that postBuild conda install went in the kernel env
+    assert "make" in kernel_conda
+    assert "make" not in server_conda
+
+
+def test_pip_install(kernel_pip, server_pip):
+    # server env comes first for pip
+    # is this expected?
+    assert "pytest" not in kernel_pip
+    assert "pytest" in server_pip
--- a/tests/external/reproductions.repos.yaml
+++ b/tests/external/reproductions.repos.yaml
@ -27,7 +27,7 @@
 # Zenodo record of https://github.com/binder-examples/requirements
 - name: 10.5281/zenodo.3242074
  url: 10.5281/zenodo.3242074
-  verify: python -c 'import matplotlib'
+  verify: /srv/conda/envs/kernel/bin/python -c 'import matplotlib'
 # Test that files in git-lfs are properly cloned
 - name: LFS
  url: https://github.com/binderhub-ci-repos/lfs
--- a/tests/pipfile/py36/verify
+++ b/tests/pipfile/py36/verify
@ -1,8 +1,8 @@
-#!/usr/bin/env python
+#!/srv/conda/envs/kernel/bin/python
 import sys

-import pypi_pkg_test
-import there
-
 print(sys.version_info)
 assert sys.version_info[:2] == (3, 6)
+
+import pypi_pkg_test  # noqa
+import there  # noqa
--- a/tests/venv/py35/verify
+++ b/tests/venv/py35/verify
@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/srv/conda/envs/kernel/bin/python
 import sys

 print(sys.version_info)