From: Matt Jolly <kan...@gentoo.org>
These variables enable users (though most likely Gentoo developers)
to override the selection of the Rust implementation by the eclass.
This means that _only_ the specified ERUST_SLOT and/or ERUST_TYPE
('source' or 'binary') will be checked for, with the eclass `die`ing
with "No Rust slot satisfying the package's dependencies..." if the
selected impl is not available.
These variables are intended to enable reproducing bugs and testing
packages against specific dev-lang/rust{,-bin} packages; they must
not be set in ebuilds.
Closes: https://bugs.gentoo.org/945752
Signed-off-by: Matt Jolly <kan...@gentoo.org>
---
eclass/rust.eclass | 49 +++++++++++++++++++++++++++++++++++++++++-----
1 file changed, 44 insertions(+), 5 deletions(-)
diff --git a/eclass/rust.eclass b/eclass/rust.eclass
index 71cbb4b24f8c..991a9cdb7f14 100644
--- a/eclass/rust.eclass
+++ b/eclass/rust.eclass
@@ -98,6 +98,26 @@ declare -a -g -r _RUST_SLOTS_ORDERED=(
"1.54.0"
)
+# == user control knobs ==
+
+# @ECLASS_VARIABLE: ERUST_SLOT
+# @USER_VARIABLE
+# @DESCRIPTION:
+# Specify the version (slot) of Rust to be used by the package. This is
+# useful for troubleshooting and debugging purposes; If unset, the newest
+# acceptable Rust version will be used. May be combined with ERUST_TYPE.
+# This variable must not be set in ebuilds.
+
+# @ECLASS_VARIABLE: ERUST_TYPE
+# @USER_VARIABLE
+# @DESCRIPTION:
+# Specify the type of Rust to be used by the package from options:
+# 'source' or 'binary' (-bin). This is useful for troubleshooting and
+# debugging purposes. If unset, the standard eclass logic will be used
+# to determine the type of Rust to use (i.e. prefer source if binary
+# is also available). May be combined with ERUST_SLOT.
+# This variable must not be set in ebuilds.
+
# == control variables ==
# @ECLASS_VARIABLE: RUST_MAX_VER
@@ -332,6 +352,10 @@ _get_rust_slot() {
fi
fi
+ if [[ -n "${ERUST_SLOT}" && "${slot}" != "${ERUST_SLOT}" ]];
then
+ continue
+ fi
+
# If we're in LLVM mode we can skip any slots that don't match
the selected USE
if [[ -n "${RUST_NEEDS_LLVM}" ]]; then
if [[ "${llvm_slot}" != "${llvm_r1_slot}" ]]; then
@@ -345,12 +369,27 @@ _get_rust_slot() {
rust_check_deps && return
else
local usedep="${RUST_REQ_USE+[${RUST_REQ_USE}]}"
- # When checking for installed packages prefer the non
`-bin` package
+ # When checking for installed packages prefer the
source package;
# if effort was put into building it we should use it.
- local rust_pkgs=(
- "dev-lang/rust:${slot}${usedep}"
- "dev-lang/rust-bin:${slot}${usedep}"
- )
+ local rust_pkgs
+ case "${ERUST_TYPE}" in
+ source)
+ rust_pkgs=(
+ "dev-lang/rust:${slot}${usedep}"
+ )
+ ;;
+ binary)
+ rust_pkgs=(
+
"dev-lang/rust-bin:${slot}${usedep}"
+ )
+ ;;
+ *)
+ rust_pkgs=(
+ "dev-lang/rust:${slot}${usedep}"
+
"dev-lang/rust-bin:${slot}${usedep}"
+ )
+ ;;
+ esac
local _pkg
for _pkg in "${rust_pkgs[@]}"; do
if has_version "${hv_switch}" "${_pkg}"; then
--
2.47.0
