mtime fixes

Cargo.lock

@@ -1830,6 +1830,18 @@ version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a481586acf778f1b1455424c343f71124b048ffa5f4fc3f8f6ae9dc432dcb3c7"
 
+[[package]]
+name = "filetime"
+version = "0.2.22"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d4029edd3e734da6fe05b6cd7bd2960760a616bd2ddd0d59a0124746d6272af0"
+dependencies = [
+ "cfg-if 1.0.0",
+ "libc",
+ "redox_syscall 0.3.5",
+ "windows-sys 0.48.0",
+]
+
 [[package]]
 name = "flate2"
 version = "1.0.28"
@@ -3930,6 +3942,15 @@ dependencies = [
  "bitflags 1.3.2",
 ]
 
+[[package]]
+name = "redox_syscall"
+version = "0.3.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "567664f262709473930a4bf9e51bf2ebf3348f2e748ccc50dea20646858f8f29"
+dependencies = [
+ "bitflags 1.3.2",
+]
+
 [[package]]
 name = "redox_syscall"
 version = "0.4.1"
@@ -5521,6 +5542,7 @@ dependencies = [
  "enum-as-inner",
  "enumset",
  "eyre",
+ "filetime",
  "flume",
  "futures-util",
  "getrandom",

veilid-core/Cargo.toml

@@ -274,6 +274,7 @@ wasm-logger = "0.2.0"
 [build-dependencies]
 capnpc = "0.18.0"
 glob = "0.3.1"
+filetime = "0.2.22"
 
 [package.metadata.wasm-pack.profile.release]
 wasm-opt = ["-O", "--enable-mutable-globals"]

veilid-core/build.rs

@@ -1,3 +1,4 @@
+use filetime::{set_file_mtime, FileTime};
 use glob::glob;
 use std::{
     env, fs, io,
@@ -84,6 +85,9 @@ fn do_capnp_build() {
         .output_path(".")
         .run()
         .expect("compiling schema");
+
+    // If successful, update modification time
+    set_file_mtime("proto/veilid_capnp.rs", FileTime::now()).unwrap();
 }
 
 // Fix for missing __extenddftf2 on Android x86_64 Emulator
@@ -113,6 +117,7 @@ fn main() {
     }
 
     if is_input_file_outdated("./proto/veilid.capnp", "./proto/veilid_capnp.rs").unwrap() {
+        println!("cargo:warning=rebuilding proto/veilid_capnp.rs because it is older than proto/veilid.capnp");
         do_capnp_build();
     }