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-rw-r--r--scripts/lib-pangenome-pack.sh37
1 files changed, 21 insertions, 16 deletions
diff --git a/scripts/lib-pangenome-pack.sh b/scripts/lib-pangenome-pack.sh
index efc5281..7707928 100644
--- a/scripts/lib-pangenome-pack.sh
+++ b/scripts/lib-pangenome-pack.sh
@@ -43,8 +43,11 @@ GB_HASH=$(git -C "$CHANNEL_DIR" rev-parse --short=8 HEAD)
 # your target microarch (e.g. Cascade Lake/Zen 4 -> v4 because
 # both have AVX-512).
 ARCH=$(uname -m)
-ARCH_SLUG="$ARCH"
 TUNE="${TUNE:-}"
+# When TUNE is set, the v-level already implies the architecture
+# (x86-64-v4 only makes sense on x86_64); use it on its own to
+# avoid a redundant "x86_64-x86-64-v4" slug.
+ARCH_SLUG="${TUNE:-$ARCH}"
 if [ -n "$TUNE" ]; then
     case "$TUNE" in
         x86-64|x86-64-v2|x86-64-v3|x86-64-v4) : ;;
@@ -63,7 +66,6 @@ EOF
             exit 2
             ;;
     esac
-    ARCH_SLUG="$ARCH-$TUNE"
 fi
 
 cpu_compat () {
@@ -77,20 +79,23 @@ cpu_compat () {
 }
 
 # Resolve the exact version each package contributes to the closure.
-# `guix package -A` is regex-on-name and can be ambiguous (multiple
-# wfmash variants), so go through `guix build -e ... -n` and parse
-# the store basename, which always carries the full version.
-resolve_version () {
-    expr="$1" ; name="$2"
-    path=$(guix build --no-offload -L "$CHANNEL_DIR" -e "$expr" -n 2>/dev/null \
-           | tail -n 1)
-    [ -n "$path" ] || { echo "could not resolve $name" >&2; exit 1; }
-    basename "$path" | sed -E "s/^[a-z0-9]+-${name}-//"
-}
-
-IMPG_VER=$(resolve_version '(@ (gn packages pangenome-rust) impg)' impg)
-WFMASH_VER=$(resolve_version '(@ (gn packages pangenome) wfmash-0.14-snapshot)' wfmash)
-PGGB_VER=$(resolve_version '(@ (gn packages pangenome) pggb)' pggb)
+# Use `guix repl` so we read `package-version` directly -- `guix
+# build -n` only prints the store path on stdout when the derivation
+# is already realized, which makes it fragile after a channel update.
+read IMPG_VER WFMASH_VER PGGB_VER <<EOF
+$(guix repl -L "$CHANNEL_DIR" -- /dev/stdin 2>/dev/null <<'SCM'
+(use-modules (guix packages)
+             (gn packages pangenome)
+             (gn packages pangenome-rust))
+(format #t "~a ~a ~a~%"
+        (package-version impg)
+        (package-version wfmash-0.14-snapshot)
+        (package-version pggb))
+SCM
+)
+EOF
+[ -n "${IMPG_VER:-}" ] && [ -n "${WFMASH_VER:-}" ] && [ -n "${PGGB_VER:-}" ] \
+    || { echo "could not resolve package versions" >&2; exit 1; }
 
 VERSION_STEM="$ARCH_SLUG-guix-bioinformatics-$GB_HASH-impg-$IMPG_VER-wfmash-$WFMASH_VER-pggb-$PGGB_VER"