Added support for extra_env_variables

CONSTRUCT.md

@@ -442,6 +442,18 @@ is compulsory and the option to disable it will not be offered.
 
 This option has no effect on `SH` installers.
 
+
+### `extra_env_variables`
+
+_required:_ no<br/>
+_type:_ list<br/>
+
+List of additional environment variables to be made available to the
+pre_install and post_install scripts, in the form of VAR=VALUE
+pairs. These environment variables are in addition to those in the
+`post_install` section above and take precedence in the case of name
+collisions.  Unix only.
+
 ### `pre_uninstall`
 
 _required:_ no<br/>

constructor/construct.py

@@ -269,6 +269,13 @@
     ('uninstall_name',         False, str, '''
 Application name in the Windows "Programs and Features" control panel.
 Defaults to `${NAME} ${VERSION} (Python ${PYVERSION} ${ARCH})`.
+'''),
+('extra_env_variables',           False, list, '''
+List of additional environment variables to be made available to the
+pre_install and post_install scripts, in the form of VAR=VALUE
+pairs. These environment variables are in addition to those in the
+`post_install` section above and take precedence in the case of name
+collisions.  Unix only.
 '''),
 
     ('pre_install',            False, str, '''

constructor/header.sh

@@ -23,6 +23,8 @@ fi
 
 # Export variables to make installer metadata available to pre/post install scripts
 # NOTE: If more vars are added, make sure to update the examples/scripts tests too
+
+_EXTRA_ENV_VARIABLES_=''  # Templated extra environment variable(s) 
 export INSTALLER_NAME='__NAME__'
 export INSTALLER_VER='__VERSION__'
 export INSTALLER_PLAT='__PLAT__'

constructor/shar.py

@@ -92,8 +92,10 @@ def get_header(conda_exec, tarball, info):
 
     data = read_header_template()
     data = preprocess(data, ppd)
+    custom_variables = info.pop('extra_env_variables', [])
     data = fill_template(data, replace)
 
+    data = data.replace("_EXTRA_ENV_VARIABLES_=''", '\n'.join([f'export {var}' for var in custom_variables]))
     return data
 
 

examples/scripts/construct.yaml

@@ -5,6 +5,11 @@ channels:
   - http://repo.anaconda.com/pkgs/main/
 specs:
   - python
+
+extra_env_variables:
+  - CUSTOM_VARIABLE_1=CUSTOM1
+  - CUSTOM_VARIABLE_2=CUSTOM2
+
 pre_install: pre_install.sh   # [unix]
 pre_install: pre_install.bat  # [win]
 pre_install_desc: "Adding this description makes the script selectable in the UI"

examples/scripts/post_install.sh

@@ -9,10 +9,15 @@ echo "INSTALLER_NAME=${INSTALLER_NAME}"
 echo "INSTALLER_VER=${INSTALLER_VER}"
 echo "INSTALLER_PLAT=${INSTALLER_PLAT}"
 echo "INSTALLER_TYPE=${INSTALLER_TYPE}"
+echo "CUSTOM_VARIABLE_1=${CUSTOM_VARIABLE_1}"
+echo "CUSTOM_VARIABLE_2=${CUSTOM_VARIABLE_2}"
 echo "PREFIX=${PREFIX}"
 
 test "${INSTALLER_NAME}" = "Scripts"
 test "${INSTALLER_VER}" = "X"
+test "${CUSTOM_VARIABLE_1}" = "CUSTOM1"
+test "${CUSTOM_VARIABLE_2}" = "CUSTOM2"
+
 if [[ $(uname -s) == Linux ]]; then
     if [[ ${INSTALLER_PLAT} != linux-* ]]; then
         exit 1

examples/scripts/pre_install.sh

@@ -6,10 +6,15 @@ echo "INSTALLER_NAME=${INSTALLER_NAME}"
 echo "INSTALLER_VER=${INSTALLER_VER}"
 echo "INSTALLER_PLAT=${INSTALLER_PLAT}"
 echo "INSTALLER_TYPE=${INSTALLER_TYPE}"
+echo "CUSTOM_VARIABLE_1=${CUSTOM_VARIABLE_1}"
+echo "CUSTOM_VARIABLE_2=${CUSTOM_VARIABLE_2}"
 echo "PREFIX=${PREFIX}"
 
 test "${INSTALLER_NAME}" = "Scripts"
 test "${INSTALLER_VER}" = "X"
+test "${CUSTOM_VARIABLE_1}" = "CUSTOM1"
+test "${CUSTOM_VARIABLE_2}" = "CUSTOM2"
+
 if [[ $(uname -s) == Linux ]]; then
     if [[ ${INSTALLER_PLAT} != linux-* ]]; then
         exit 1