Update master_changes.md

master_changes.md

@@ -78,6 +78,8 @@ users)
   * Fix incorrect deduplication of environment variables on update. Effect was that FOO += "" would occlude the value of FOO in the environment [#5837 @dra27]
   * Fix regression from #5356 on the detection of out-of-date environment variables. As part of a refactoring, a filter predicate got inverted [#5837 @dra27]
   * Unixify Windows paths in init shells scripts (sh, bash, zsh, fish & tsh) [#5797 @rjbou]
+  * `OpamProcess.cygwin_create_process_env` no longer adjusts PATH [#5832 @dra27]
+  * Internal Cygwin installation's bin directory is placed as far down PATH as is necessary not to shadow `bash`, `tar` or `git` [#5832 @dra27]
 
 ## Opamfile
   * Hijack the `%{?val_if_true:val_if_false}%` syntax to support extending the variables of packages with + in their name [#5840 @kit-ty-kate]
@@ -187,6 +189,8 @@ users)
   * `OpamSysInteract.Cygwin.check_install`: look for `cygcheck.exe` in `usr/bin` also as MSYS2 doesn't have "bin" [#5843 @rjbou]
   * `OpamGlobalState.load_config`: load MSYS2 Cygwin binary path too at config file loading [#5843 @rjbou]
   * `OpamEnv`: add `sys_ocaml_eval_variables` value, moved `OpamInitDefaults` as it is also needed in `OpamFormatUpgrade` too [#5829 @rjbou @kit-ty-kate]
+  * Unused `OpamEnv.get_opam` and `OpamEnv.get_opam_raw` removed (`OpamEnv` is complicated enough!) [#5832 @dra27]
+  * `OpamEnv` supports an internal `Cygwin` environment operation which pushes the given directory as far down the list as can be done without shadowing. This mechanism replaces the opposite which was done in OpamProcess [#5832 @dra27]
 
 ## opam-solver
 
@@ -195,6 +199,8 @@ users)
   * `OpamTypesBase`: add `filter_ident_of_string_interp` that is used for parsing variables in string interpolation like `filter_ident_of_string` but permits the parsing of '%{?pkg+:var:}%' syntax [#5840 @rjbou]
   * `OpamTypesBase.filter_ident_of_string_interp`: add `accept` optional argument to be able to raise an error when several pluses are in the package name without using the new syntax, like `%{pkg+++:var}%`
   * `OpamFilter`: add `extract_variables_from_string` to retrieve string of variables, and exposes it [#5840 @rjbou]
+  * `OpamFile.Switch_config.t` is now a private record (like `OpamFile.OPAM.t`) [#5832 @dra27]
+  * `OpamTypes.env_update` now has an additional type parameter indicating whether the update is internal or writeable [#5832 @dra27]
 
 ## opam-core
   * `OpamStd.Sys`: add `is_cygwin_variant_cygcheck` that returns true if in path `cygcheck` is from a Cygwin or MSYS2 installation [#5843 @rjbou]