feat: compat code for non x86_64-linux

- do not build packages, which require `x86_64-linux`
- use Phala `dcap-qvl` crate for remote attestation, if possible
- nix: exclude `nixsgx` on non `x86_64-linux` platforms

Signed-off-by: Harald Hoyer <harald@matterlabs.dev>

bin/verify-attestation/src/main.rs

@@ -7,10 +7,7 @@ use anyhow::{bail, Context, Result};
 use clap::Parser;
 
 use std::{fs, io::Read, path::PathBuf, str::FromStr, time::UNIX_EPOCH};
-use teepot::quote::{
-    error, tcblevel::TcbLevel, tee_qv_get_collateral, verify_quote_with_collateral,
-    QuoteVerificationResult,
-};
+use teepot::quote::{get_collateral, verify_quote_with_collateral, QuoteVerificationResult};
 
 #[derive(Parser, Debug)]
 #[command(author = "Matter Labs", version, about = "SGX attestation and batch signature verifier", long_about = None)]
@@ -62,10 +59,7 @@ fn verify_attestation_quote(attestation_quote_bytes: &[u8]) -> Result<QuoteVerif
         "Verifying quote ({} bytes)...",
         attestation_quote_bytes.len()
     );
-    let collateral = error::QuoteContext::context(
-        tee_qv_get_collateral(attestation_quote_bytes),
-        "Failed to get collateral",
-    )?;
+    let collateral = get_collateral(attestation_quote_bytes)?;
     let unix_time: i64 = std::time::SystemTime::now()
         .duration_since(UNIX_EPOCH)?
         .as_secs() as _;
@@ -76,7 +70,7 @@ fn verify_attestation_quote(attestation_quote_bytes: &[u8]) -> Result<QuoteVerif
 fn print_quote_verification_summary(quote_verification_result: &QuoteVerificationResult) {
     let QuoteVerificationResult {
         collateral_expired,
-        result,
+        result: tcblevel,
         quote,
         advisories,
         ..
@@ -84,7 +78,6 @@ fn print_quote_verification_summary(quote_verification_result: &QuoteVerificatio
     if *collateral_expired {
         println!("Freshly fetched collateral expired");
     }
-    let tcblevel = TcbLevel::from(*result);
     for advisory in advisories {
         println!("\tInfo: Advisory ID: {advisory}");
     }