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Pin the pre-push hook's .NET channel and prefer an installed SDK

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A git hook runs with a stripped PATH, so `command -v dotnet` missed the SDK
that was already installed and ensure_dotnet fell through to downloading one.
It asked for the current channel, got .NET 9, and failed every project in the
solution with NETSDK1045 — the build only breaks when the hook actually runs,
which is precisely when it is least welcome.

ensure_dotnet now looks in DOTNET_ROOT and the usual per-user and system install
locations before downloading anything, and the download is pinned to the channel
matching the repo's TargetFramework rather than whatever is current.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01S56bfZMGe1hnhpWP4CjjNw
This commit is contained in:
James Wampler
2026-08-06 12:11:20 -07:00
co-authored by Claude Opus 5
parent 725758ccd9
commit 96021c5fee
1 changed files with 23 additions and 8 deletions
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scripts/ci/lib.sh
+23 -8
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@@ -15,20 +15,35 @@ fail() {
# Repo root, regardless of the caller's cwd.
CI_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/../.." && pwd)"
# Prepends a locally installed .NET SDK to PATH when `dotnet` is missing, so a runner
# with no SDK preinstalled behaves the same as a dev machine.
# The .NET channel to install when no SDK is found. This has to match the TargetFramework
# the projects declare — a git hook runs with a stripped PATH, so "whatever channel is
# current" quietly installed .NET 9 for a net10.0 repo and failed the whole build.
DOTNET_CHANNEL="${DOTNET_CHANNEL:-10.0}"
# Puts a .NET SDK on PATH. Prefers one that is already installed — including the common
# per-user and system locations a git hook's PATH does not include — and only downloads
# one as a last resort, so a bare runner behaves the same as a dev machine.
ensure_dotnet() {
if command -v dotnet > /dev/null 2>&1; then
return 0
fi
local install_dir="$CI_ROOT/.dotnet"
if [[ ! -x "$install_dir/dotnet" ]]; then
log "dotnet not found on PATH; installing the .NET SDK"
curl -fsSL https://dot.net/v1/dotnet-install.sh -o "/tmp/dotnet-install.sh"
bash "/tmp/dotnet-install.sh" --channel STS --install-dir "$install_dir"
rm -f "/tmp/dotnet-install.sh"
local candidate
for candidate in "${DOTNET_ROOT:-}" "$CI_ROOT/.dotnet" "$HOME/.dotnet" /usr/share/dotnet /usr/lib/dotnet; do
if [[ -n "$candidate" && -x "$candidate/dotnet" ]]; then
log "Using the .NET SDK at $candidate"
export PATH="$candidate:$PATH"
export DOTNET_ROOT="$candidate"
return 0
fi
done
local install_dir="$CI_ROOT/.dotnet"
log "dotnet not found; installing the .NET $DOTNET_CHANNEL SDK into $install_dir"
curl -fsSL https://dot.net/v1/dotnet-install.sh -o "/tmp/dotnet-install.sh"
bash "/tmp/dotnet-install.sh" --channel "$DOTNET_CHANNEL" --install-dir "$install_dir"
rm -f "/tmp/dotnet-install.sh"
export PATH="$install_dir:$PATH"
export DOTNET_ROOT="$install_dir"
}