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#!/usr/bin/env bash
set -euo pipefail
# --- Usage ---
# ./build.sh <url> <sha256>
if [[ $# -ne 2 ]]; then
echo "Usage: $0 <url> <sha256>"
exit 1
fi
SRC_URL="$1"
SRC_HASH="$2"
NIX_STORE_VOL="nix-store"
NIX_STATE_VOL="nix-state"
# --- Ensure Podman volumes exist ---
ensure_volume() {
local vol="$1"
if ! podman volume inspect "$vol" >/dev/null 2>&1; then
echo "📦 Creating Podman volume: $vol"
podman volume create "$vol" >/dev/null
fi
}
ensure_volume "$NIX_STORE_VOL"
ensure_volume "$NIX_STATE_VOL"
# --- Detect host CA bundle ---
HOST_CA_BUNDLE=""
if [[ -f /etc/ssl/certs/ca-certificates.crt ]]; then
HOST_CA_BUNDLE="/etc/ssl/certs/ca-certificates.crt"
elif [[ -f /etc/pki/tls/certs/ca-bundle.crt ]]; then
HOST_CA_BUNDLE="/etc/pki/tls/certs/ca-bundle.crt"
fi
# --- Run inside Nix container ---
podman run --rm -it \
-v "$NIX_STORE_VOL":/nix/store \
-v "$NIX_STATE_VOL":/nix/var \
-v /etc/ssl/certs:/etc/ssl/certs:ro \
-v /etc/pki:/etc/pki:ro \
${HOST_CA_BUNDLE:+-v "$HOST_CA_BUNDLE:$HOST_CA_BUNDLE:ro"} \
-e SRC_URL="$SRC_URL" \
-e SRC_HASH="$SRC_HASH" \
-e SSL_CERT_FILE="$HOST_CA_BUNDLE" \
-e NIX_SSL_CERT_FILE="$HOST_CA_BUNDLE" \
docker.io/nixos/nix:latest \
nix-shell -p bash nix-prefetch-url --run "
set -euo pipefail
echo \"⬇ Fetching into nix store...\"
STORE_PATH=\$(nix-prefetch-url --unpack --type sha256 \"\$SRC_URL\" \"\$SRC_HASH\")
echo \"📦 Source stored at: \$STORE_PATH\"
if [[ ! -d \"\$STORE_PATH\" ]]; then
echo \"❌ Expected unpacked directory in nix store\"
exit 1
fi
cd \"\$STORE_PATH\"
echo \"📂 Entered: \$(pwd)\"
if [[ ! -f default.nix ]]; then
echo \"❌ No default.nix found in source\"
exit 1
fi
echo \"🔨 Running nix-build...\"
nix-build default.nix --out-link result
BIN_DIR=./result/bin
if [[ ! -d \"\$BIN_DIR\" ]]; then
echo \"ℹ No binaries produced.\"
exit 0
fi
mapfile -t BINARIES < <(ls -1 \"\$BIN_DIR\")
if (( \${#BINARIES[@]} == 0 )); then
echo \"ℹ No binaries found in result/bin\"
exit 0
fi
echo \"Available binaries:\"
select CHOSEN_BIN in \"\${BINARIES[@]}\" \"Quit\"; do
if [[ \"\$CHOSEN_BIN\" == \"Quit\" ]]; then
echo \"Exiting.\"
break
elif [[ -n \"\$CHOSEN_BIN\" ]]; then
echo \"▶ Running \$CHOSEN_BIN...\"
\"\$BIN_DIR/\$CHOSEN_BIN\"
break
else
echo \"Invalid selection, try again.\"
fi
done
"
echo "✅ Done!"
echo " • Persistent Nix store: $NIX_STORE_VOL"
echo " • Persistent Nix state: $NIX_STATE_VOL"
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