Define `etc/profile.d/mamba.sh` and install it (#3413)

* Install profile.d directory

* Format

Signed-off-by: Julien Jerphanion <git@jjerphan.xyz>

* Package etc/profile.d/mamba.sh

Signed-off-by: Julien Jerphanion <git@jjerphan.xyz>

* Just install mamba.sh directly

Signed-off-by: Julien Jerphanion <git@jjerphan.xyz>

* Modify env specification to invalidate its cache

FYI, the "build" package has been yanked:
https://prefix.dev/channels/conda-forge/packages/build

Signed-off-by: Julien Jerphanion <git@jjerphan.xyz>

* Empty commit to retrigger CI

Signed-off-by: Julien Jerphanion <git@jjerphan.xyz>

* Change output path of the script

Signed-off-by: Julien Jerphanion <git@jjerphan.xyz>

* Revert uneeded changes

Signed-off-by: Julien Jerphanion <git@jjerphan.xyz>

---------

Signed-off-by: Julien Jerphanion <git@jjerphan.xyz>
Co-authored-by: Sylvain Corlay <sylvain.corlay@gmail.com>

dev/environment-dev.yml

@@ -39,7 +39,6 @@ dependencies:
   - securesystemslib
   # libmambapy build dependencies
   - scikit-build
-  - build
   - pybind11-stubgen <1.0
   # libmambapy dependencies
   - python

mamba_package/CMakeLists.txt

@@ -9,6 +9,7 @@ cmake_policy(SET CMP0025 NEW) # Introduced in cmake 3.0
 cmake_policy(SET CMP0077 NEW) # Introduced in cmake 3.13
 
 project(mamba-package)
+include(GNUInstallDirs)
 
 # Source files
 # ============
@@ -37,4 +38,19 @@ target_link_libraries(mamba-package PRIVATE mamba::libmamba)
 
 set_target_properties(mamba-package PROPERTIES CXX_STANDARD 17)
 
-install(TARGETS mamba-package)
+configure_file(
+    "${CMAKE_CURRENT_SOURCE_DIR}/etc/profile.d/mamba.sh.in"
+    "${CMAKE_CURRENT_BINARY_DIR}/etc/profile.d/mamba.sh"
+)
+
+install(
+    FILES ${CMAKE_CURRENT_BINARY_DIR}/etc/profile.d/mamba.sh
+    DESTINATION ${CMAKE_INSTALL_PREFIX}/etc/profile.d/
+)
+
+install(
+    TARGETS mamba-package
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+)

mamba_package/etc/profile.d/mamba.sh.in

@@ -0,0 +1,7 @@
+__mamba_setup="$("@CMAKE_INSTALL_PREFIX@/@CMAKE_INSTALL_BINDIR@/mamba" shell hook --shell zsh --root-prefix "@CMAKE_INSTALL_PREFIX@" 2> /dev/null)"
+if [ $? -eq 0 ]; then
+    eval "$__mamba_setup"
+else
+    alias micromamba="@CMAKE_INSTALL_PREFIX@/@CMAKE_INSTALL_BINDIR@/mamba"  # Fallback on help from mamba activate
+fi
+unset __mamba_setup