commit: f5a9dfa675788eba7f4986bb4b86fc05996bc42d
Author: Georgy Yakovlev <gyakovlev <AT> gentoo <DOT> org>
AuthorDate: Sun Sep 27 21:18:36 2020 +0000
Commit: Georgy Yakovlev <gyakovlev <AT> gentoo <DOT> org>
CommitDate: Tue Sep 29 01:56:33 2020 +0000
URL: https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=f5a9dfa6
eclass/cargo.eclass: support cached downloads for live ebuilds
Also honor ECARGO_OFFLINE/EVCS_OFFLINE
Good portion of the code/logic inspired by git-r3.eclass.
Signed-off-by: Georgy Yakovlev <gyakovlev <AT> gentoo.org>
eclass/cargo.eclass | 113 ++++++++++++++++++++++++++++++++++++++++++++++++----
1 file changed, 106 insertions(+), 7 deletions(-)
diff --git a/eclass/cargo.eclass b/eclass/cargo.eclass
index 6d341601a11..dec56b48fc9 100644
--- a/eclass/cargo.eclass
+++ b/eclass/cargo.eclass
@@ -46,6 +46,35 @@ ECARGO_VENDOR="${ECARGO_HOME}/gentoo"
# }
# @CODE
+# @ECLASS-VARIABLE: ECARGO_REGISTRY_DIR
+# @USER_VARIABLE
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# Storage directory for cargo registry.
+# Used by cargo_live_src_unpack to cache downloads.
+# This is intended to be set by users.
+# Ebuilds must not set it.
+#
+# Defaults to "${DISTDIR}/cargo-registry" it not set.
+
+# @ECLASS-VARIABLE: ECARGO_OFFLINE
+# @USER_VARIABLE
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# If non-empty, this variable prevents online operations in
+# cargo_live_src_unpack.
+# Inherits value of EVCS_OFFLINE if not set explicitly.
+
+# @ECLASS-VARIABLE: EVCS_UMASK
+# @USER_VARIABLE
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# Set this variable to a custom umask. This is intended to be set by
+# users. By setting this to something like 002, it can make life easier
+# for people who use cargo in a home directory, but are in the portage
+# group, and then switch over to building with FEATURES=userpriv.
+# Or vice-versa.
+
# @FUNCTION: cargo_crate_uris
# @DESCRIPTION:
# Generates the URIs to put in SRC_URI to help fetch dependencies.
@@ -122,13 +151,82 @@ cargo_live_src_unpack() {
[[ "${EBUILD_PHASE}" == unpack ]] || die "${FUNCNAME} only allowed in
src_unpack"
mkdir -p "${S}" || die
+ mkdir -p "${ECARGO_VENDOR}" || die
+ mkdir -p "${ECARGO_HOME}" || die
+
+ local distdir=${PORTAGE_ACTUAL_DISTDIR:-${DISTDIR}}
+ : ${ECARGO_REGISTRY_DIR:=${distdir}/cargo-registry}
+
+ local offline="${ECARGO_OFFLINE:-${EVCS_OFFLINE}}"
+
+ if [[ ! -d ${ECARGO_REGISTRY_DIR} && ! ${offline} ]]; then
+ (
+ addwrite "${ECARGO_REGISTRY_DIR}"
+ mkdir -p "${ECARGO_REGISTRY_DIR}"
+ ) || die "Unable to create ${ECARGO_REGISTRY_DIR}"
+ fi
+
+ if [[ ${offline} ]]; then
+ local subdir
+ for subdir in cache index src; do
+ if [[ ! -d ${ECARGO_REGISTRY_DIR}/registry/${subdir}
]]; then
+ eerror "Networking activity has been disabled
via ECARGO_OFFLINE or EVCS_OFFLINE"
+ eerror "However, no valid cargo registry
available at ${ECARGO_REGISTRY_DIR}"
+ die "Unable to proceed with
ECARGO_OFFLINE/EVCS_OFFLINE."
+ fi
+ done
+ fi
+
+ if [[ ${EVCS_UMASK} ]]; then
+ local saved_umask=$(umask)
+ umask "${EVCS_UMASK}" || die "Bad options to umask:
${EVCS_UMASK}"
+ fi
pushd "${S}" > /dev/null || die
- # need to specify CARGO_HOME before cargo_gen_config fired
- CARGO_HOME="${ECARGO_HOME}" cargo fetch || die
- CARGO_HOME="${ECARGO_HOME}" cargo vendor "${ECARGO_VENDOR}" || die
+
+ # Respect user settings befire cargo_gen_config is called.
+ if [[ ! ${CARGO_TERM_COLOR} ]]; then
+ [[ "${NOCOLOR}" = true || "${NOCOLOR}" = yes ]] && export
CARGO_TERM_COLOR=never
+ local unset_color=true
+ fi
+ if [[ ! ${CARGO_TERM_VERBOSE} ]]; then
+ export CARGO_TERM_VERBOSE=true
+ local unset_verbose=true
+ fi
+
+ # Let cargo fetch to system-wide location.
+ # It will keep directory organized by itself.
+ addwrite "${ECARGO_REGISTRY_DIR}"
+ export CARGO_HOME="${ECARGO_REGISTRY_DIR}"
+
+ # Absence of quotes around offline arg is intentional, as cargo bails
out if it encounters ''
+ einfo "cargo fetch ${offline:+--offline}"
+ cargo fetch ${offline:+--offline} || die #nowarn
+
+ # Let cargo copy all required crates to "${WORKDIR}" for offline use in
later phases.
+ einfo "cargo vendor ${offline:+--offline} ${ECARGO_VENDOR}"
+ cargo vendor ${offline:+--offline} "${ECARGO_VENDOR}" || die #nowarn
+
+ # Users may have git checkouts made by cargo.
+ # While cargo vendors the sources, it still needs git checkout to be
present.
+ # Copying full dir is an overkill, so just symlink it.
+ if [[ -d ${ECARGO_REGISTRY_DIR}/git ]]; then
+ ln -sv "${ECARGO_REGISTRY_DIR}/git" "${ECARGO_HOME}/git" || die
+ fi
+
popd > /dev/null || die
+ # Restore settings if needed.
+ [[ ${unset_color} ]] && unset CARGO_TERM_COLOR
+ [[ ${unset_verbose} ]] && unset CARGO_TERM_VERBOSE
+ if [[ ${saved_umask} ]]; then
+ umask "${saved_umask}" || die
+ fi
+
+ # After following calls, cargo will no longer use
${ECARGO_REGISTRY_DIR} as CARGO_HOME
+ # It will be forced into offline mode to prevent network access.
+ # But since we already vendored crates and symlinked git, it has all it
needs to build.
+ unset CARGO_HOME
cargo_gen_config
}
@@ -145,7 +243,9 @@ cargo_live_src_unpack() {
cargo_gen_config() {
debug-print-function ${FUNCNAME} "$@"
- cat <<- EOF > "${ECARGO_HOME}/config"
+ mkdir -p "${ECARGO_HOME}" || die
+
+ cat > "${ECARGO_HOME}/config" <<- _EOF_ || die "Failed to create cargo
config"
[source.gentoo]
directory = "${ECARGO_VENDOR}"
@@ -161,9 +261,8 @@ cargo_gen_config() {
[term]
verbose = true
- EOF
- # honor NOCOLOR setting
- [[ "${NOCOLOR}" = true || "${NOCOLOR}" = yes ]] && echo "color =
'never'" >> "${ECARGO_HOME}/config"
+ $([[ "${NOCOLOR}" = true || "${NOCOLOR}" = yes ]] && echo "color =
'never'")
+ _EOF_
export CARGO_HOME="${ECARGO_HOME}"
}
