fix: Version parsing for mamba v1

constructor/header.sh

@@ -680,7 +680,7 @@ if [ "$BATCH" = "0" ]; then
             # to perform the initialization.
             #
             # Otherwise (i.e. as of 2.0.0), we use the `mamba shell init` command
-            if [ "$("$PREFIX/bin/mamba" --version | cut -d' ' -f2 | cut -d'.' -f1)" -lt 2 ]; then
+            if [ "$("$PREFIX/bin/mamba" --version | head -n 1 | cut -d' ' -f2 | cut -d'.' -f1)" -lt 2 ]; then
                 case $SHELL in
                     # We call the module directly to avoid issues with spaces in shebang
                     *zsh) "$PREFIX/bin/python" -m mamba.mamba init zsh ;;

examples/miniforge-mamba2/EULA.txt

@@ -0,0 +1,28 @@
+Copyright (c) 2016, Example, Inc.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright
+      notice, this list of conditions and the following disclaimer in the
+      documentation and/or other materials provided with the distribution.
+    * Neither the name of Example, Inc. nor the
+      names of its contributors may be used to endorse or promote products
+      derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL EXAMPLE, INC. BE LIABLE FOR ANY
+DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+The License has to be read correctly so that dollar signs don't lead to an unset
+parameter error:
+You have to pay US $8, if you can read this.

examples/miniforge-mamba2/construct.yaml

@@ -0,0 +1,25 @@
+name: Miniforge3-mamba2
+version: 25.0.0-2
+company: conda-forge
+license_file: EULA.txt
+
+channels:
+  - conda-forge
+
+write_condarc: True
+keep_pkgs: True
+transmute_file_type: .conda
+
+specs:
+  - python 3.12.*
+  - conda 24.11.2
+  - mamba 2.0.5
+  - pip
+  - miniforge_console_shortcut 1.*  # [win]
+
+# Added for extra testing
+installer_type: all
+post_install: test_install.sh  # [unix]
+post_install: test_install.bat  # [win]
+initialize_by_default: false
+register_python: False

examples/miniforge-mamba2/test_install.bat

@@ -0,0 +1,8 @@
+echo Added by test-install script > "%PREFIX%\test_install_sentinel.txt"
+SetLocal EnableDelayedExpansion
+
+@ECHO ON
+call "%PREFIX%\Scripts\activate.bat
+conda info || exit 1
+conda config --show-sources || exit 1
+conda config --show --json | python -c "import sys, json; info = json.loads(sys.stdin.read()); assert 'conda-forge' in info['channels'], info"

examples/miniforge-mamba2/test_install.sh

@@ -0,0 +1,64 @@
+#!/bin/bash
+
+set -eo pipefail
+echo "Added by test-install script" > "$PREFIX/test_install_sentinel.txt"
+
+echo "sourcing..."
+# shellcheck disable=SC1091
+source "$PREFIX/etc/profile.d/conda.sh"
+
+conda activate "$PREFIX"
+
+echo "+ conda info"
+conda info -v
+
+echo "+ conda config"
+conda config --show-sources
+
+echo "+ Testing conda channels"
+conda config --show --json | python -c "import sys, json; info = json.loads(sys.stdin.read()); assert 'conda-forge' in info['channels'], info"
+echo "  OK"
+
+EXPECTED_MAMBA_VERSION="2.0.5"
+
+# Get versions with conda
+MAMBA_VERSION=$(conda list "^mamba$" --json | python -c "import sys, json; info = json.loads(sys.stdin.read()); print(info[0]['version'])")
+LIBMAMBA_VERSION=$(conda list "^libmamba$" --json | python -c "import sys, json; info = json.loads(sys.stdin.read()); print(info[0]['version'])")
+LIBMAMBAPY_VERSION=$(conda list "^libmambapy$" --json | python -c "import sys, json; info = json.loads(sys.stdin.read()); print(info[0]['version'])")
+
+if [ "$MAMBA_VERSION" != "$EXPECTED_MAMBA_VERSION" ]; then
+    echo "ERROR: Mamba version mismatch: expected $EXPECTED_MAMBA_VERSION, got $MAMBA_VERSION"
+    exit 1
+fi
+
+if [ "$LIBMAMBA_VERSION" != "$EXPECTED_MAMBA_VERSION" ]; then
+    echo "ERROR: libmamba version mismatch: expected $EXPECTED_MAMBA_VERSION, got $LIBMAMBA_VERSION"
+    exit 1
+fi
+
+if [ "$LIBMAMBAPY_VERSION" != "$EXPECTED_MAMBA_VERSION" ]; then
+    echo "ERROR: libmambapy version mismatch: expected $EXPECTED_MAMBA_VERSION, got $LIBMAMBAPY_VERSION"
+    exit 1
+fi
+
+echo "+ Testing mamba 2 installation"
+mamba --version | grep -q "$EXPECTED_MAMBA_VERSION"
+
+echo "+ mamba info"
+mamba info
+
+echo "+ mamba config sources"
+mamba config sources
+
+echo "+ mamba config list"
+mamba config list
+
+echo "+ Testing mamba 2 version"
+mamba info --json | python -c "import sys, json; info = json.loads(sys.stdin.read()); assert info['mamba version'] == '$EXPECTED_MAMBA_VERSION', info"
+
+echo "+ Testing libmambapy 2 version"
+python -c "import libmambapy; assert libmambapy.__version__ == '$EXPECTED_MAMBA_VERSION', f'libmamba version got: {libmambapy.__version__}; expected: ${EXPECTED_MAMBA_VERSION}'"
+
+echo "+ Testing mamba channels"
+mamba info --json | python -c "import sys, json; info = json.loads(sys.stdin.read()); assert any('conda-forge' in c for c in info['channels']), info"
+echo "  OK"

examples/miniforge/construct.yaml

@@ -1,5 +1,5 @@
 name: Miniforge3
-version: 25.0.0
+version: 25.0.0-1
 company: conda-forge
 license_file: EULA.txt
 
@@ -13,7 +13,7 @@ transmute_file_type: .conda
 specs:
   - python 3.12.*
   - conda 24.11.2
-  - mamba 2.0.5
+  - mamba 1.5.12
   - pip
   - miniforge_console_shortcut 1.*  # [win]
 

examples/miniforge/test_install.sh

@@ -19,26 +19,39 @@ echo "+ Testing conda channels"
 conda config --show --json | python -c "import sys, json; info = json.loads(sys.stdin.read()); assert 'conda-forge' in info['channels'], info"
 echo "  OK"
 
-echo "+ Testing mamba installation"
+EXPECTED_MAMBA_VERSION="1.5.12"
+
+# Get versions with conda
+MAMBA_VERSION=$(conda list "^mamba$" --json | python -c "import sys, json; info = json.loads(sys.stdin.read()); print(info[0]['version'])")
+LIBMAMBA_VERSION=$(conda list "^libmamba$" --json | python -c "import sys, json; info = json.loads(sys.stdin.read()); print(info[0]['version'])")
+LIBMAMBAPY_VERSION=$(conda list "^libmambapy$" --json | python -c "import sys, json; info = json.loads(sys.stdin.read()); print(info[0]['version'])")
+
+if [ "$MAMBA_VERSION" != "$EXPECTED_MAMBA_VERSION" ]; then
+    echo "ERROR: Mamba version mismatch: expected $EXPECTED_MAMBA_VERSION, got $MAMBA_VERSION"
+    exit 1
+fi
+
+if [ "$LIBMAMBA_VERSION" != "$EXPECTED_MAMBA_VERSION" ]; then
+    echo "ERROR: libmamba version mismatch: expected $EXPECTED_MAMBA_VERSION, got $LIBMAMBA_VERSION"
+    exit 1
+fi
+
+if [ "$LIBMAMBAPY_VERSION" != "$EXPECTED_MAMBA_VERSION" ]; then
+    echo "ERROR: libmambapy version mismatch: expected $EXPECTED_MAMBA_VERSION, got $LIBMAMBAPY_VERSION"
+    exit 1
+fi
+
+echo "+ Testing mamba 1 installation"
 mamba --version
-echo "  OK"
 
 echo "+ mamba info"
 mamba info
 
-echo "+ mamba config sources"
-mamba config sources
-
-echo "+ mamba config list"
-mamba config list
+echo "+ Testing mamba version"
+mamba --version | grep mamba | cut -d' ' -f2 | grep -q "$EXPECTED_MAMBA_VERSION"
+mamba --version | grep conda | cut -d' ' -f2 | grep -q 24.11.2
 
-echo "+ Testing mamba 2 version"
-mamba info --json | python -c "import sys, json; info = json.loads(sys.stdin.read()); assert info['mamba version'] == '2.0.5', info"
-echo "  OK"
-
-echo "+ Testing libmambapy 2 version"
-python -c "import libmambapy; assert libmambapy.__version__ == '2.0.5', f'libmamba version got: {libmambapy.__version__}; expected: 2.0.5'"
-echo "  OK"
+mamba info --json | python -c "import sys, json; info = json.loads(sys.stdin.read()); assert info['mamba_version'] == '$EXPECTED_MAMBA_VERSION', info"
 
 echo "+ Testing mamba channels"
 mamba info --json | python -c "import sys, json; info = json.loads(sys.stdin.read()); assert any('conda-forge' in c for c in info['channels']), info"

news/936-version-parsing-mamba-1

@@ -0,0 +1,19 @@
+### Enhancements
+
+* <news item>
+
+### Bug fixes
+
+* Fix version parsing when `mamba` v1 is used (#936)
+
+### Deprecations
+
+* <news item>
+
+### Docs
+
+* <news item>
+
+### Other
+
+* <news item>

tests/test_examples.py

@@ -419,8 +419,9 @@ def test_example_extra_files(tmp_path, request):
     ),
     reason="Known issue with conda-standalone<=23.10: shortcuts are created but not removed.",
 )
-def test_example_miniforge(tmp_path, request):
-    input_path = _example_path("miniforge")
+@pytest.mark.parametrize("example", ("miniforge", "miniforge-mamba2"))
+def test_example_miniforge(tmp_path, request, example):
+    input_path = _example_path(example)
     for installer, install_dir in create_installer(input_path, tmp_path):
         if installer.suffix == ".sh":
             # try both batch and interactive installations
@@ -435,13 +436,15 @@ def test_example_miniforge(tmp_path, request):
                 installer,
                 install_dir,
                 installer_input=installer_input,
+                request=request,
                 # PKG installers use their own install path, so we can't check sentinels
                 # via `install_dir`
                 check_sentinels=installer.suffix != ".pkg",
                 uninstall=False,
             )
             if installer.suffix == ".pkg" and ON_CI:
-                _sentinel_file_checks(input_path, Path(os.environ["HOME"]) / "Miniforge3")
+                basename = "Miniforge3" if example == "miniforge" else "Miniforge3-mamba2"
+                _sentinel_file_checks(input_path, Path(os.environ["HOME"]) / basename)
             if installer.suffix == ".exe":
                 for key in ("ProgramData", "AppData"):
                     start_menu_dir = Path(