Add support for conda init --condabin, which adds condabin/ to PATH

.github/workflows/main.yml

@@ -127,6 +127,7 @@ jobs:
             conda activate constructor-dev
             echo "CONSTRUCTOR_CONDA_EXE=$CONDA_PREFIX/standalone_conda/conda.exe" >> $GITHUB_ENV
           fi
+          echo "CONDA_PREFIX=$CONDA_PREFIX" >> $GITHUB_ENV
       - name: conda info
         run: conda info
       - name: conda list

CONSTRUCT.md

@@ -491,7 +491,16 @@ If `header_image` is not provided, use this text when generating the image
 
 Add an option to the installer so the user can choose whether to run `conda init`
 after the installation (Unix), or to add certain subdirectories of the installation
-to PATH (Windows). See also `initialize_by_default`.
+to PATH (Windows). Requires `conda` to be part of the `base` environment. Valid options:
+
+- `classic` or `True`: runs `conda init` on Unix, which injects a shell function in the
+  shell profiles. On Windows, it adds `$INSTDIR`, `$INSTDIR/Scripts`, `$INSTDIR/Library/bin`
+  to `PATH`. This is the default.
+- `condabin`: only adds `$INSTDIR/condabin` to `PATH`. On Unix, `conda>=25.5.0` is required
+  in `base`.
+- `False`: the installer doesn't perform initialization.
+
+See also `initialize_by_default`.
 
 ### `initialize_by_default`
 
@@ -500,7 +509,7 @@ is true for GUI installers (EXE, PKG) and false for shell installers. The user
 is able to change the default during interactive installation. NOTE: For Windows,
 `AddToPath` is disabled when `InstallationType=AllUsers`.
 
-Only applies if `initialize_conda` is true.
+Only applies if `initialize_conda` is not false.
 
 ### `register_python`
 

constructor/_schema.py

@@ -50,6 +50,11 @@ class PkgDomains(StrEnum):
     LOCAL_SYSTEM = "enable_localSystem"
 
 
+class CondaInitialization(StrEnum):
+    CLASSIC = "classic"
+    CONDABIN = "condabin"
+
+
 class ChannelRemap(BaseModel):
     model_config: ConfigDict = _base_config_dict
 
@@ -649,11 +654,20 @@ class ConstructorConfiguration(BaseModel):
     If `header_image` is not provided, use this text when generating the image
     (Windows only). Defaults to `name`.
     """
-    initialize_conda: bool = True
+    initialize_conda: CondaInitialization | bool = True
     """
     Add an option to the installer so the user can choose whether to run `conda init`
     after the installation (Unix), or to add certain subdirectories of the installation
-    to PATH (Windows). See also `initialize_by_default`.
+    to PATH (Windows). Requires `conda` to be part of the `base` environment. Valid options:
+
+    - `classic` or `True`: runs `conda init` on Unix, which injects a shell function in the
+      shell profiles. On Windows, it adds `$INSTDIR`, `$INSTDIR/Scripts`, `$INSTDIR/Library/bin`
+      to `PATH`. This is the default.
+    - `condabin`: only adds `$INSTDIR/condabin` to `PATH`. On Unix, `conda>=25.5.0` is required
+      in `base`.
+    - `False`: the installer doesn't perform initialization.
+
+    See also `initialize_by_default`.
     """
     initialize_by_default: bool | None = None
     """
@@ -662,7 +676,7 @@ class ConstructorConfiguration(BaseModel):
     is able to change the default during interactive installation. NOTE: For Windows,
     `AddToPath` is disabled when `InstallationType=AllUsers`.
 
-    Only applies if `initialize_conda` is true.
+    Only applies if `initialize_conda` is not false.
     """
     register_python: bool = True
     """

constructor/data/construct.schema.json

@@ -35,6 +35,14 @@
       "title": "ChannelRemap",
       "type": "object"
     },
+    "CondaInitialization": {
+      "enum": [
+        "classic",
+        "condabin"
+      ],
+      "title": "CondaInitialization",
+      "type": "string"
+    },
     "ExtraEnv": {
       "additionalProperties": false,
       "properties": {
@@ -749,14 +757,21 @@
         }
       ],
       "default": null,
-      "description": "Default value for the option added by `initialize_conda`. The default is true for GUI installers (EXE, PKG) and false for shell installers. The user is able to change the default during interactive installation. NOTE: For Windows, `AddToPath` is disabled when `InstallationType=AllUsers`.\nOnly applies if `initialize_conda` is true.",
+      "description": "Default value for the option added by `initialize_conda`. The default is true for GUI installers (EXE, PKG) and false for shell installers. The user is able to change the default during interactive installation. NOTE: For Windows, `AddToPath` is disabled when `InstallationType=AllUsers`.\nOnly applies if `initialize_conda` is not false.",
       "title": "Initialize By Default"
     },
     "initialize_conda": {
+      "anyOf": [
+        {
+          "$ref": "#/$defs/CondaInitialization"
+        },
+        {
+          "type": "boolean"
+        }
+      ],
       "default": true,
-      "description": "Add an option to the installer so the user can choose whether to run `conda init` after the installation (Unix), or to add certain subdirectories of the installation to PATH (Windows). See also `initialize_by_default`.",
-      "title": "Initialize Conda",
-      "type": "boolean"
+      "description": "Add an option to the installer so the user can choose whether to run `conda init` after the installation (Unix), or to add certain subdirectories of the installation to PATH (Windows). Requires `conda` to be part of the `base` environment. Valid options:\n- `classic` or `True`: runs `conda init` on Unix, which injects a shell function in the  shell profiles. On Windows, it adds `$INSTDIR`, `$INSTDIR/Scripts`, `$INSTDIR/Library/bin`  to `PATH`. This is the default.\n- `condabin`: only adds `$INSTDIR/condabin` to `PATH`. On Unix, `conda>=25.5.0` is required  in `base`.\n- `False`: the installer doesn't perform initialization.\nSee also `initialize_by_default`.",
+      "title": "Initialize Conda"
     },
     "install_in_dependency_order": {
       "anyOf": [

constructor/header.sh

@@ -93,6 +93,7 @@ SKIP_SCRIPTS=0
 {%- if enable_shortcuts == "true" %}
 SKIP_SHORTCUTS=0
 {%- endif %}
+INIT_CONDA=0
 TEST=0
 REINSTALL=0
 USAGE="
@@ -123,18 +124,30 @@ Installs ${INSTALLER_NAME} ${INSTALLER_VER}
 -u           update an existing installation
 {%- if has_conda %}
 -t           run package tests after installation (may install conda-build)
+{%-   if initialize_conda %}
+-c           run 'conda init{{ ' --condabin' if initialize_conda == 'condabin' else ''}}' after installation (only applies to batch mode)
+{%-   endif %}
 {%- endif %}
 "
 
+{#-
 # We used to have a getopt version here, falling back to getopts if needed
 # However getopt is not standardized and the version on Mac has different
 # behaviour. getopts is good enough for what we need :)
 # More info: https://unix.stackexchange.com/questions/62950/
+#}
+{%- set getopts_str = "bifhkp:s" %}
 {%- if enable_shortcuts == "true" %}
-while getopts "bifhkp:smut" x; do
-{%- else %}
-while getopts "bifhkp:sut" x; do
+{%-   set getopts_str = getopts_str ~ "m" %}
+{%- endif %}
+{%- set getopts_str = getopts_str ~ "u" %}
+{%- if has_conda %}
+{%-   set getopts_str = getopts_str ~ "t" %}
+{%-     if initialize_conda %}
+{%-       set getopts_str = getopts_str ~ "c" %}
+{%-     endif %}
 {%- endif %}
+while getopts "{{ getopts_str }}" x; do
     case "$x" in
         h)
             printf "%s\\n" "$USAGE"
@@ -170,6 +183,11 @@ while getopts "bifhkp:sut" x; do
         t)
             TEST=1
             ;;
+{%-   if initialize_conda %}
+        c)
+            INIT_CONDA=1
+            ;;
+{%-   endif %}
 {%- endif %}
         ?)
             printf "ERROR: did not recognize option '%s', please try -h\\n" "$x"
@@ -514,7 +532,7 @@ if [ "$(id -u)" -ne 0 ]; then
 fi
 
 # the third binary payload: the tarball of packages
-printf "Unpacking payload ...\n"
+printf "Unpacking payload...\n"
 extract_range "${boundary2}" "${boundary3}" | \
     CONDA_QUIET="$BATCH" "$CONDA_EXEC" constructor --extract-tarball --prefix "$PREFIX"
 
@@ -547,12 +565,14 @@ MSGS="$PREFIX/.messages.txt"
 touch "$MSGS"
 export FORCE
 
+{#-
 # original issue report:
 # https://github.com/ContinuumIO/anaconda-issues/issues/11148
 # First try to fix it (this apparently didn't work; QA reported the issue again)
 # https://github.com/conda/conda/pull/9073
 # Avoid silent errors when $HOME is not writable
 # https://github.com/conda/constructor/pull/669
+#}
 test -d ~/.conda || mkdir -p ~/.conda >/dev/null 2>/dev/null || test -d ~/.conda || mkdir ~/.conda
 
 printf "\nInstalling base environment...\n\n"
@@ -635,7 +655,6 @@ rm -rf "$PREFIX/install_tmp"
 export TMP="$TMP_BACKUP"
 
 
-#The templating doesn't support nested if statements
 {%- if has_post_install %}
 if [ "$SKIP_SCRIPTS" = "1" ]; then
     printf "WARNING: skipping post_install.sh by user request\\n" >&2
@@ -675,9 +694,66 @@ if [ "${PYTHONPATH:-}" != "" ]; then
     printf "    directories of packages that are compatible with the Python interpreter\\n"
     printf "    in %s: %s\\n" "${INSTALLER_NAME}" "$PREFIX"
 fi
+{% if has_conda %}
+{%- if initialize_conda == 'condabin' %}
+_maybe_run_conda_init_condabin() {
+    case $SHELL in
+        # We call the module directly to avoid issues with spaces in shebang
+        *zsh) "$PREFIX/bin/python" -m conda init --condabin zsh ;;
+        *) "$PREFIX/bin/python" -m conda init --condabin ;;
+    esac
+}
+{%- elif initialize_conda %}
+_maybe_run_conda_init() {
+    case $SHELL in
+        # We call the module directly to avoid issues with spaces in shebang
+        *zsh) "$PREFIX/bin/python" -m conda init zsh ;;
+        *) "$PREFIX/bin/python" -m conda init ;;
+    esac
+    if [ -f "$PREFIX/bin/mamba" ]; then
+        # If the version of mamba is <2.0.0, we preferably use the `mamba` python module
+        # to perform the initialization.
+        #
+        # Otherwise (i.e. as of 2.0.0), we use the `mamba shell init` command
+        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 ;;
+                *) "$PREFIX/bin/python" -m mamba.mamba init ;;
+            esac
+        else
+            case $SHELL in
+                *zsh) "$PREFIX/bin/mamba" shell init --shell zsh ;;
+                *) "$PREFIX/bin/mamba" shell init ;;
+            esac
+        fi
+    fi
+}
+{%- endif %}
+{%- endif %}
 
 if [ "$BATCH" = "0" ]; then
-{%- if has_conda and initialize_conda %}
+{%- if has_conda %}
+{%-     if initialize_conda == 'condabin' %}
+    DEFAULT={{ 'yes' if initialize_by_default else 'no' }}
+
+    printf "Do you wish to update your shell profile to add '%s/condabin' to PATH?\\n" "$PREFIX"
+    printf "This will enable you to run 'conda' anywhere, without injecting a shell function.\\n"
+    printf "You can undo this by running \`conda init --condabin --reverse? [yes|no]\\n"
+    printf "[%s] >>> " "$DEFAULT"
+    read -r ans
+    if [ "$ans" = "" ]; then
+        ans=$DEFAULT
+    fi
+    ans=$(echo "${ans}" | tr '[:lower:]' '[:upper:]')
+    if [ "$ans" != "YES" ] && [ "$ans" != "Y" ]
+    then
+        printf "\\n"
+        printf "'%s/condabin' will not be added to PATH.\\n" "$PREFIX"
+    else
+        _maybe_run_conda_init_condabin
+    fi
+{%-     elif initialize_conda %}
     DEFAULT={{ 'yes' if initialize_by_default else 'no' }}
     # Interactive mode.
 
@@ -708,34 +784,26 @@ if [ "$BATCH" = "0" ]; then
         printf "conda init\\n"
         printf "\\n"
     else
-        case $SHELL in
-            # We call the module directly to avoid issues with spaces in shebang
-            *zsh) "$PREFIX/bin/python" -m conda init zsh ;;
-            *) "$PREFIX/bin/python" -m conda init ;;
-        esac
-        if [ -f "$PREFIX/bin/mamba" ]; then
-            # If the version of mamba is <2.0.0, we preferably use the `mamba` python module
-            # to perform the initialization.
-            #
-            # Otherwise (i.e. as of 2.0.0), we use the `mamba shell init` command
-            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 ;;
-                    *) "$PREFIX/bin/python" -m mamba.mamba init ;;
-                esac
-            else
-                case $SHELL in
-                    *zsh) "$PREFIX/bin/mamba" shell init --shell zsh ;;
-                    *) "$PREFIX/bin/mamba" shell init ;;
-                esac
-            fi
-        fi
+        _maybe_run_conda_init
     fi
+{%-     endif %}
 {%- endif %}
 
     printf "Thank you for installing %s!\\n" "${INSTALLER_NAME}"
-fi # !BATCH
+{#- End of Interactive mode #}
+{#- Batch mode #}
+{%- if has_conda and initialize_conda %}
+elif [ "$INIT_CONDA" = "1" ]; then
+{%-     if initialize_conda == 'condabin' %}
+        printf "Adding '%s/condabin' to PATH...\\n" "$PREFIX"
+        _maybe_run_conda_init_condabin
+{%-     else %}
+        printf "Initializing '%s' with 'conda init'...\\n" "$PREFIX"
+        _maybe_run_conda_init
+{%-     endif %}
+{%- endif %}
+{#- End of Batch mode #}
+fi
 
 
 {%- if has_conda %}

constructor/main.py

@@ -262,6 +262,16 @@ def main_build(
     # '_dists': list[Dist]
     # '_urls': list[Tuple[url, md5]]
 
+    if initialize_conda := info.get("initialize_conda"):
+        if not info.get("_has_conda"):
+            sys.exit("Error: 'initialize_conda' requires 'conda' in the base environment.")
+        if initialize_conda == "condabin" and platform.startswith(("linux-", "osx-")):
+            conda = next(record for record in info.get("_records", ()) if record.name == "conda")
+            if Version(conda.version) < Version("25.5.0"):
+                sys.exit(
+                    "Error: 'initialize_conda == condabin' requires 'conda >=25.5.0' in base env."
+                )
+
     os.makedirs(output_dir, exist_ok=True)
     info_dicts = []
     for itype in itypes: