option for mold passthrough

easier than envvars

Cargo.lock

@@ -391,9 +391,9 @@ checksum = "9ac0150caa2ae65ca5bd83f25c7de183dea78d4d366469f148435e2acfbad0da"
 
 [[package]]
 name = "cacache"
-version = "13.0.0"
+version = "13.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a61ff12b19d89c752c213316b87fdb4a587f073d219b893cc56974b8c9f39bf7"
+checksum = "5c5063741c7b2e260bbede781cf4679632dd90e2718e99f7715e46824b65670b"
 dependencies = [
  "digest",
  "either",
@@ -1645,9 +1645,9 @@ dependencies = [
 
 [[package]]
 name = "libc"
-version = "0.2.164"
+version = "0.2.166"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "433bfe06b8c75da9b2e3fbea6e5329ff87748f0b144ef75306e674c3f6f7c13f"
+checksum = "c2ccc108bbc0b1331bd061864e7cd823c0cab660bbe6970e66e2c0614decde36"
 
 [[package]]
 name = "libloading"
@@ -2468,9 +2468,9 @@ dependencies = [
 
 [[package]]
 name = "rustls"
-version = "0.23.18"
+version = "0.23.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9c9cc1d47e243d655ace55ed38201c19ae02c148ae56412ab8750e8f0166ab7f"
+checksum = "934b404430bb06b3fae2cba809eb45a1ab1aecd64491213d7c3301b88393f8d1"
 dependencies = [
  "once_cell",
  "ring",
@@ -3053,9 +3053,9 @@ checksum = "8df9b6e13f2d32c91b9bd719c00d1958837bc7dec474d94952798cc8e69eeec3"
 
 [[package]]
 name = "tracing"
-version = "0.1.40"
+version = "0.1.41"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c3523ab5a71916ccf420eebdf5521fcef02141234bbc0b8a49f2fdc4544364ef"
+checksum = "784e0ac535deb450455cbfa28a6f0df145ea1bb7ae51b821cf5e7927fdcfbdd0"
 dependencies = [
  "pin-project-lite",
  "tracing-attributes",
@@ -3064,9 +3064,9 @@ dependencies = [
 
 [[package]]
 name = "tracing-attributes"
-version = "0.1.27"
+version = "0.1.28"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34704c8d6ebcbc939824180af020566b01a7c01f80641264eba0999f6c2b6be7"
+checksum = "395ae124c09f9e6918a2310af6038fba074bcf474ac352496d5910dd59a2226d"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -3075,9 +3075,9 @@ dependencies = [
 
 [[package]]
 name = "tracing-core"
-version = "0.1.32"
+version = "0.1.33"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c06d3da6113f116aaee68e4d601191614c9053067f9ab7f6edbcb161237daa54"
+checksum = "e672c95779cf947c5311f83787af4fa8fffd12fb27e4993211a84bdfd9610f9c"
 dependencies = [
  "once_cell",
  "valuable",

Cargo.toml

@@ -19,11 +19,12 @@ futures = { version = "0.3", default-features = false, features = ["std"] }
 getrandom = { features = ["linux_disable_fallback"], version = "0.2" }
 gettext-rs = { version = "0.7", features = ["gettext-system"] }
 http-cache = { version = "0.20", default-features = false, features = [
-  "cacache",
   "cacache-tokio",
   "manager-cacache",
 ] }
-http-cache-reqwest = "0.15"
+http-cache-reqwest = { version = "0.15", default-features = false, features = [
+  "manager-cacache",
+] }
 image = { version = "0.25", default-features = false, features = [
   "jpeg",
   "png",

meson.build

@@ -49,6 +49,10 @@ else
   extra_rustflags = []
 endif
 
+if get_option('moldy')
+  cargo_env.append('RUSTFLAGS', '-Clink-arg=-fuse-ld=mold', separator: ' ')
+endif
+
 cargo_env.set('MESON_BUILD_ROOT', meson.project_build_root())
 cargo_env.set('CARGO_MANIFEST_DIR', meson.project_source_root())
 cargo_env.set('CARGO_TARGET_DIR', meson.project_build_root() / 'target')

meson.options

@@ -0,0 +1,6 @@
+option(
+   'moldy',
+   description: 'use mold',
+   type: 'boolean',
+   value:true,
+)