From c588edaf25ac0d5edbc56b0d15f83e9fb9985187 Mon Sep 17 00:00:00 2001
From: Lily Foster <lily@lily.flowers>
Date: Wed, 17 Apr 2024 11:12:50 -0400
Subject: [PATCH] prefetch-npm-deps: remove runtime dependency on nix

---
 .../node/fetch-npm-deps/Cargo.lock            | 505 +++++++++++-------
 .../node/fetch-npm-deps/Cargo.toml            |  21 +-
 .../node/fetch-npm-deps/default.nix           |   4 +-
 .../node/fetch-npm-deps/src/cacache.rs        |   1 +
 .../node/fetch-npm-deps/src/main.rs           |   7 +-
 .../node/fetch-npm-deps/src/parse/lock.rs     |   2 +-
 .../node/fetch-npm-deps/src/util.rs           |  22 +-
 7 files changed, 358 insertions(+), 204 deletions(-)

diff --git a/pkgs/build-support/node/fetch-npm-deps/Cargo.lock b/pkgs/build-support/node/fetch-npm-deps/Cargo.lock
index 8ba72a7b76c4..71b9caba13d5 100644
--- a/pkgs/build-support/node/fetch-npm-deps/Cargo.lock
+++ b/pkgs/build-support/node/fetch-npm-deps/Cargo.lock
@@ -4,18 +4,66 @@ version = 3
 
 [[package]]
 name = "aho-corasick"
-version = "1.1.2"
+version = "1.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b2969dcb958b36655471fc61f7e416fa76033bdd4bfed0678d8fee1e2d07a1f0"
+checksum = "8e60d3430d3a69478ad0993f19238d2df97c507009a52b3c10addcd7f6bcb916"
 dependencies = [
  "memchr",
 ]
 
 [[package]]
-name = "anyhow"
-version = "1.0.75"
+name = "anstream"
+version = "0.6.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a4668cab20f66d8d020e1fbc0ebe47217433c1b6c8f2040faf858554e394ace6"
+checksum = "d96bd03f33fe50a863e394ee9718a706f988b9079b20c3784fb726e7678b62fb"
+dependencies = [
+ "anstyle",
+ "anstyle-parse",
+ "anstyle-query",
+ "anstyle-wincon",
+ "colorchoice",
+ "utf8parse",
+]
+
+[[package]]
+name = "anstyle"
+version = "1.0.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8901269c6307e8d93993578286ac0edf7f195079ffff5ebdeea6a59ffb7e36bc"
+
+[[package]]
+name = "anstyle-parse"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c75ac65da39e5fe5ab759307499ddad880d724eed2f6ce5b5e8a26f4f387928c"
+dependencies = [
+ "utf8parse",
+]
+
+[[package]]
+name = "anstyle-query"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e28923312444cdd728e4738b3f9c9cac739500909bb3d3c94b43551b16517648"
+dependencies = [
+ "windows-sys 0.52.0",
+]
+
+[[package]]
+name = "anstyle-wincon"
+version = "3.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1cd54b81ec8d6180e24654d0b371ad22fc3dd083b6ff8ba325b72e00c87660a7"
+dependencies = [
+ "anstyle",
+ "windows-sys 0.52.0",
+]
+
+[[package]]
+name = "anyhow"
+version = "1.0.82"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f538837af36e6f6a9be0faa67f9a314f8119e4e4b5867c6ab40ed60360142519"
 
 [[package]]
 name = "async-channel"
@@ -30,9 +78,9 @@ dependencies = [
 
 [[package]]
 name = "autocfg"
-version = "1.1.0"
+version = "1.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
+checksum = "f1fdabc7756949593fe60f30ec81974b613357de856987752631dea1e3394c80"
 
 [[package]]
 name = "backoff"
@@ -47,9 +95,9 @@ dependencies = [
 
 [[package]]
 name = "base64"
-version = "0.21.5"
+version = "0.22.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "35636a1494ede3b646cc98f74f8e62c773a38a659ebc777a2cf26b9b74171df9"
+checksum = "9475866fec1451be56a3c2400fd081ff546538961565ccb5b7142cbd22bc7a51"
 
 [[package]]
 name = "bitflags"
@@ -59,9 +107,9 @@ checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
 
 [[package]]
 name = "bitflags"
-version = "2.4.1"
+version = "2.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "327762f6e5a765692301e5bb513e0d9fef63be86bbc14528052b1cd3e6f03e07"
+checksum = "cf4b9d6a944f767f8e5e0db018570623c85f3d925ac718db4e06d0187adb21c1"
 
 [[package]]
 name = "block-buffer"
@@ -74,9 +122,15 @@ dependencies = [
 
 [[package]]
 name = "bytes"
-version = "1.5.0"
+version = "1.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a2bd12c1caf447e69cd4528f47f94d203fd2582878ecb9e9465484c4148a8223"
+checksum = "514de17de45fdb8dc022b1a7975556c53c86f9f0aa5f534b98977b171857c2c9"
+
+[[package]]
+name = "camino"
+version = "1.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c59e92b5a388f549b863a7bea62612c09f24c8393560709a54558a9abdfb3b9c"
 
 [[package]]
 name = "castaway"
@@ -86,12 +140,9 @@ checksum = "a2698f953def977c68f935bb0dfa959375ad4638570e969e2f1e9f433cbf1af6"
 
 [[package]]
 name = "cc"
-version = "1.0.83"
+version = "1.0.94"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f1174fb0b6ec23863f8b971027804a42614e347eafb0a95bf0b12cdae21fc4d0"
-dependencies = [
- "libc",
-]
+checksum = "17f6e324229dc011159fcc089755d1e2e216a90d43a7dea6853ca740b84f35e7"
 
 [[package]]
 name = "cfg-if"
@@ -100,55 +151,53 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
 
 [[package]]
-name = "concurrent-queue"
-version = "2.3.0"
+name = "colorchoice"
+version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f057a694a54f12365049b0958a1685bb52d567f5593b355fbf685838e873d400"
+checksum = "acbf1af155f9b9ef647e42cdc158db4b64a1b61f743629225fde6f3e0be2a7c7"
+
+[[package]]
+name = "concurrent-queue"
+version = "2.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d16048cd947b08fa32c24458a22f5dc5e835264f689f4f5653210c69fd107363"
 dependencies = [
  "crossbeam-utils",
 ]
 
 [[package]]
 name = "cpufeatures"
-version = "0.2.11"
+version = "0.2.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ce420fe07aecd3e67c5f910618fe65e94158f6dcc0adf44e00d69ce2bdfe0fd0"
+checksum = "53fe5e26ff1b7aef8bca9c6080520cfb8d9333c7568e1829cef191a9723e5504"
 dependencies = [
  "libc",
 ]
 
 [[package]]
 name = "crossbeam-deque"
-version = "0.8.3"
+version = "0.8.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ce6fd6f855243022dcecf8702fef0c297d4338e226845fe067f6341ad9fa0cef"
+checksum = "613f8cc01fe9cf1a3eb3d7f488fd2fa8388403e97039e2f73692932e291a770d"
 dependencies = [
- "cfg-if",
  "crossbeam-epoch",
  "crossbeam-utils",
 ]
 
 [[package]]
 name = "crossbeam-epoch"
-version = "0.9.15"
+version = "0.9.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ae211234986c545741a7dc064309f67ee1e5ad243d0e48335adc0484d960bcc7"
+checksum = "5b82ac4a3c2ca9c3460964f020e1402edd5753411d7737aa39c3714ad1b5420e"
 dependencies = [
- "autocfg",
- "cfg-if",
  "crossbeam-utils",
- "memoffset",
- "scopeguard",
 ]
 
 [[package]]
 name = "crossbeam-utils"
-version = "0.8.16"
+version = "0.8.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5a22b2d63d4d1dc0b7f1b6b2747dd0088008a9be28b6ddf0b1e7d335e3037294"
-dependencies = [
- "cfg-if",
-]
+checksum = "248e3bacc7dc6baa3b21e405ee045c3047101a49145e7e9eca583ab4c2ca5345"
 
 [[package]]
 name = "crypto-common"
@@ -162,9 +211,9 @@ dependencies = [
 
 [[package]]
 name = "curl"
-version = "0.4.44"
+version = "0.4.46"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "509bd11746c7ac09ebd19f0b17782eae80aadee26237658a6b4808afb5c11a22"
+checksum = "1e2161dd6eba090ff1594084e95fd67aeccf04382ffea77999ea94ed42ec67b6"
 dependencies = [
  "curl-sys",
  "libc",
@@ -172,14 +221,14 @@ dependencies = [
  "openssl-sys",
  "schannel",
  "socket2",
- "winapi",
+ "windows-sys 0.52.0",
 ]
 
 [[package]]
 name = "curl-sys"
-version = "0.4.68+curl-8.4.0"
+version = "0.4.72+curl-8.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b4a0d18d88360e374b16b2273c832b5e57258ffc1d4aa4f96b108e0738d5752f"
+checksum = "29cbdc8314c447d11e8fd156dcdd031d9e02a7a976163e396b548c03153bc9ea"
 dependencies = [
  "cc",
  "libc",
@@ -187,7 +236,7 @@ dependencies = [
  "openssl-sys",
  "pkg-config",
  "vcpkg",
- "windows-sys",
+ "windows-sys 0.52.0",
 ]
 
 [[package]]
@@ -202,31 +251,41 @@ dependencies = [
 
 [[package]]
 name = "either"
-version = "1.9.0"
+version = "1.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a26ae43d7bcc3b814de94796a5e736d4029efb0ee900c12e2d54c993ad1a1e07"
+checksum = "a47c1c47d2f5964e29c61246e81db715514cd532db6b5116a25ea3c03d6780a2"
+
+[[package]]
+name = "env_filter"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a009aa4810eb158359dda09d0c87378e4bbb89b5a801f016885a4707ba24f7ea"
+dependencies = [
+ "log",
+ "regex",
+]
 
 [[package]]
 name = "env_logger"
-version = "0.10.1"
+version = "0.11.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "95b3f3e67048839cb0d0781f445682a35113da7121f7c949db0e2be96a4fbece"
+checksum = "38b35839ba51819680ba087cd351788c9a3c476841207e0b8cee0b04722343b9"
 dependencies = [
+ "anstream",
+ "anstyle",
+ "env_filter",
  "humantime",
- "is-terminal",
  "log",
- "regex",
- "termcolor",
 ]
 
 [[package]]
 name = "errno"
-version = "0.3.7"
+version = "0.3.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f258a7194e7f7c2a7837a8913aeab7fd8c383457034fa20ce4dd3dcb813e8eb8"
+checksum = "a258e46cdc063eb8519c00b9fc845fc47bcfca4130e2f08e88665ceda8474245"
 dependencies = [
  "libc",
- "windows-sys",
+ "windows-sys 0.52.0",
 ]
 
 [[package]]
@@ -246,9 +305,9 @@ dependencies = [
 
 [[package]]
 name = "fastrand"
-version = "2.0.1"
+version = "2.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "25cbce373ec4653f1a01a31e8a5e5ec0c622dc27ff9c4e6606eefef5cbbed4a5"
+checksum = "658bd65b1cf4c852a3cc96f18a8ce7b5640f6b703f905c7d74532294c2a63984"
 
 [[package]]
 name = "fnv"
@@ -258,24 +317,24 @@ checksum = "3f9eec918d3f24069decb9af1554cad7c880e2da24a9afd88aca000531ab82c1"
 
 [[package]]
 name = "form_urlencoded"
-version = "1.2.0"
+version = "1.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a62bc1cf6f830c2ec14a513a9fb124d0a213a629668a4186f329db21fe045652"
+checksum = "e13624c2627564efccf4934284bdd98cbaa14e79b0b5a141218e507b3a823456"
 dependencies = [
  "percent-encoding",
 ]
 
 [[package]]
 name = "futures-core"
-version = "0.3.29"
+version = "0.3.30"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "eb1d22c66e66d9d72e1758f0bd7d4fd0bee04cad842ee34587d68c07e45d088c"
+checksum = "dfc6580bb841c5a68e9ef15c77ccc837b40a7504914d52e47b8b0e9bbda25a1d"
 
 [[package]]
 name = "futures-io"
-version = "0.3.29"
+version = "0.3.30"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8bf34a163b5c4c52d0478a4d757da8fb65cabef42ba90515efee0f6f9fa45aaa"
+checksum = "a44623e20b9681a318efdd71c299b6b222ed6f231972bfe2f224ebad6311f0c1"
 
 [[package]]
 name = "futures-lite"
@@ -304,26 +363,20 @@ dependencies = [
 
 [[package]]
 name = "getrandom"
-version = "0.2.11"
+version = "0.2.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fe9006bed769170c11f845cf00c7c1e9092aeb3f268e007c3e760ac68008070f"
+checksum = "94b22e06ecb0110981051723910cbf0b5f5e09a2062dd7663334ee79a9d1286c"
 dependencies = [
  "cfg-if",
  "libc",
  "wasi",
 ]
 
-[[package]]
-name = "hermit-abi"
-version = "0.3.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d77f7ec81a6d05a3abb01ab6eb7590f6083d08449fe5a1c8b1e620283546ccb7"
-
 [[package]]
 name = "http"
-version = "0.2.11"
+version = "0.2.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8947b1a6fad4393052c7ba1f4cd97bed3e953a95c79c92ad9b051a04611d9fbb"
+checksum = "601cbb57e577e2f5ef5be8e7b83f0f63994f25aa94d673e54a92d5c516d101f1"
 dependencies = [
  "bytes",
  "fnv",
@@ -338,9 +391,9 @@ checksum = "9a3a5bfb195931eeb336b2a7b4d761daec841b97f947d34394601737a7bba5e4"
 
 [[package]]
 name = "idna"
-version = "0.4.0"
+version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7d20d6b07bfbc108882d88ed8e37d39636dcc260e15e30c45e6ba089610b917c"
+checksum = "634d9b1461af396cad843f47fdba5597a4f9e6ddd4bfb6ff5d85028c25cb12f6"
 dependencies = [
  "unicode-bidi",
  "unicode-normalization",
@@ -356,14 +409,12 @@ dependencies = [
 ]
 
 [[package]]
-name = "is-terminal"
-version = "0.4.9"
+name = "is_executable"
+version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cb0889898416213fab133e1d33a0e5858a48177452750691bde3666d0fdbaf8b"
+checksum = "fa9acdc6d67b75e626ad644734e8bc6df893d9cd2a834129065d3dd6158ea9c8"
 dependencies = [
- "hermit-abi",
- "rustix",
- "windows-sys",
+ "winapi",
 ]
 
 [[package]]
@@ -393,21 +444,21 @@ dependencies = [
 
 [[package]]
 name = "itoa"
-version = "1.0.9"
+version = "1.0.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "af150ab688ff2122fcef229be89cb50dd66af9e01a4ff320cc137eecc9bacc38"
+checksum = "49f1f14873335454500d59611f1cf4a4b0f786f9ac11f4312a78e4cf2566695b"
 
 [[package]]
 name = "libc"
-version = "0.2.150"
+version = "0.2.153"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "89d92a4743f9a61002fae18374ed11e7973f530cb3a3255fb354818118b2203c"
+checksum = "9c198f91728a82281a64e1f4f9eeb25d82cb32a5de251c6bd1b5154d63a8e7bd"
 
 [[package]]
 name = "libz-sys"
-version = "1.1.12"
+version = "1.1.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d97137b25e321a73eef1418d1d5d2eda4d77e12813f8e6dead84bc52c5870a7b"
+checksum = "5e143b5e666b2695d28f6bca6497720813f699c9602dd7f5cac91008b8ada7f9"
 dependencies = [
  "cc",
  "libc",
@@ -417,36 +468,39 @@ dependencies = [
 
 [[package]]
 name = "linux-raw-sys"
-version = "0.4.11"
+version = "0.4.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "969488b55f8ac402214f3f5fd243ebb7206cf82de60d3172994707a4bcc2b829"
+checksum = "01cda141df6706de531b6c46c3a33ecca755538219bd484262fa09410c13539c"
 
 [[package]]
 name = "log"
-version = "0.4.20"
+version = "0.4.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b5e6163cb8c49088c2c36f57875e58ccd8c87c7427f7fbd50ea6710b2f3f2e8f"
+checksum = "90ed8c1e510134f979dbc4f070f87d4313098b704861a105fe34231c70a3901c"
 
 [[package]]
 name = "memchr"
-version = "2.6.4"
+version = "2.7.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f665ee40bc4a3c5590afb1e9677db74a508659dfd71e126420da8274909a0167"
+checksum = "6c8640c5d730cb13ebd907d8d04b52f55ac9a2eec55b440c8892f40d56c76c1d"
 
 [[package]]
-name = "memoffset"
-version = "0.9.0"
+name = "nix-nar"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5a634b1c61a95585bd15607c6ab0c4e5b226e695ff2800ba0cdccddf208c406c"
+checksum = "d5549158a8b179c4fcd06a19f4bcc557db60c9cbd6771add9563f46c8d0325b5"
 dependencies = [
- "autocfg",
+ "camino",
+ "is_executable",
+ "symlink",
+ "thiserror",
 ]
 
 [[package]]
 name = "once_cell"
-version = "1.18.0"
+version = "1.19.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dd8b5dd2ae5ed71462c540258bedcb51965123ad7e7ccf4b9a8cafaa4a63576d"
+checksum = "3fdb12b2476b595f9358c5161aa467c2438859caa136dec86c26fdd2efe17b92"
 
 [[package]]
 name = "openssl-probe"
@@ -456,9 +510,9 @@ checksum = "ff011a302c396a5197692431fc1948019154afc178baf7d8e37367442a4601cf"
 
 [[package]]
 name = "openssl-sys"
-version = "0.9.95"
+version = "0.9.102"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "40a4130519a360279579c2053038317e40eff64d13fd3f004f9e1b72b8a6aaf9"
+checksum = "c597637d56fbc83893a35eb0dd04b2b8e7a50c91e64e9493e398b5df4fb45fa2"
 dependencies = [
  "cc",
  "libc",
@@ -474,24 +528,24 @@ checksum = "bb813b8af86854136c6922af0598d719255ecb2179515e6e7730d468f05c9cae"
 
 [[package]]
 name = "percent-encoding"
-version = "2.3.0"
+version = "2.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9b2a4787296e9989611394c33f193f676704af1686e70b8f8033ab5ba9a35a94"
+checksum = "e3148f5046208a5d56bcfc03053e3ca6334e51da8dfb19b6cdc8b306fae3283e"
 
 [[package]]
 name = "pin-project"
-version = "1.1.3"
+version = "1.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fda4ed1c6c173e3fc7a83629421152e01d7b1f9b7f65fb301e490e8cfc656422"
+checksum = "b6bf43b791c5b9e34c3d182969b4abb522f9343702850a2e57f460d00d09b4b3"
 dependencies = [
  "pin-project-internal",
 ]
 
 [[package]]
 name = "pin-project-internal"
-version = "1.1.3"
+version = "1.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4359fd9c9171ec6e8c62926d6faaf553a8dc3f64e1507e76da7911b4f6a04405"
+checksum = "2f38a4412a78282e09a2cf38d195ea5420d15ba0602cb375210efbc877243965"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -500,15 +554,15 @@ dependencies = [
 
 [[package]]
 name = "pin-project-lite"
-version = "0.2.13"
+version = "0.2.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8afb450f006bf6385ca15ef45d71d2288452bc3683ce2e2cacc0d18e4be60b58"
+checksum = "bda66fc9667c18cb2758a2ac84d1167245054bcf85d5d1aaa6923f45801bdd02"
 
 [[package]]
 name = "pkg-config"
-version = "0.3.27"
+version = "0.3.30"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "26072860ba924cbfa98ea39c8c19b4dd6a4a25423dbdf219c1eca91aa0cf6964"
+checksum = "d231b230927b5e4ad203db57bbcbee2802f6bce620b1e4a9024a07d94e2907ec"
 
 [[package]]
 name = "polling"
@@ -523,7 +577,7 @@ dependencies = [
  "libc",
  "log",
  "pin-project-lite",
- "windows-sys",
+ "windows-sys 0.48.0",
 ]
 
 [[package]]
@@ -543,6 +597,7 @@ dependencies = [
  "env_logger",
  "isahc",
  "log",
+ "nix-nar",
  "rayon",
  "serde",
  "serde_json",
@@ -555,18 +610,18 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.69"
+version = "1.0.81"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "134c189feb4956b20f6f547d2cf727d4c0fe06722b20a0eec87ed445a97f92da"
+checksum = "3d1597b0c024618f09a9c3b8655b7e430397a36d23fdafec26d6965e9eec3eba"
 dependencies = [
  "unicode-ident",
 ]
 
 [[package]]
 name = "quote"
-version = "1.0.33"
+version = "1.0.36"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5267fca4496028628a95160fc423a33e8b2e6af8a5302579e322e4b520293cae"
+checksum = "0fa76aaf39101c457836aec0ce2316dbdc3ab723cdda1c6bd4e6ad4208acaca7"
 dependencies = [
  "proc-macro2",
 ]
@@ -603,9 +658,9 @@ dependencies = [
 
 [[package]]
 name = "rayon"
-version = "1.8.0"
+version = "1.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9c27db03db7734835b3f53954b534c91069375ce6ccaa2e065441e07d9b6cdb1"
+checksum = "b418a60154510ca1a002a752ca9714984e21e4241e804d32555251faf8b78ffa"
 dependencies = [
  "either",
  "rayon-core",
@@ -613,28 +668,19 @@ dependencies = [
 
 [[package]]
 name = "rayon-core"
-version = "1.12.0"
+version = "1.12.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5ce3fb6ad83f861aac485e76e1985cd109d9a3713802152be56c3b1f0e0658ed"
+checksum = "1465873a3dfdaa8ae7cb14b4383657caab0b3e8a0aa9ae8e04b044854c8dfce2"
 dependencies = [
  "crossbeam-deque",
  "crossbeam-utils",
 ]
 
-[[package]]
-name = "redox_syscall"
-version = "0.4.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4722d768eff46b75989dd134e5c353f0d6296e5aaa3132e776cbdb56be7731aa"
-dependencies = [
- "bitflags 1.3.2",
-]
-
 [[package]]
 name = "regex"
-version = "1.10.2"
+version = "1.10.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "380b951a9c5e80ddfd6136919eef32310721aa4aacd4889a8d39124b026ab343"
+checksum = "c117dbdfde9c8308975b6a18d71f3f385c89461f7b3fb054288ecf2a2058ba4c"
 dependencies = [
  "aho-corasick",
  "memchr",
@@ -644,9 +690,9 @@ dependencies = [
 
 [[package]]
 name = "regex-automata"
-version = "0.4.3"
+version = "0.4.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5f804c7828047e88b2d32e2d7fe5a105da8ee3264f01902f796c8e067dc2483f"
+checksum = "86b83b8b9847f9bf95ef68afb0b8e6cdb80f498442f5179a29fad448fcc1eaea"
 dependencies = [
  "aho-corasick",
  "memchr",
@@ -655,28 +701,28 @@ dependencies = [
 
 [[package]]
 name = "regex-syntax"
-version = "0.8.2"
+version = "0.8.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c08c74e62047bb2de4ff487b251e4a92e24f48745648451635cec7d591162d9f"
+checksum = "adad44e29e4c806119491a7f06f03de4d1af22c3a680dd47f1e6e179439d1f56"
 
 [[package]]
 name = "rustix"
-version = "0.38.25"
+version = "0.38.32"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dc99bc2d4f1fed22595588a013687477aedf3cdcfb26558c559edb67b4d9b22e"
+checksum = "65e04861e65f21776e67888bfbea442b3642beaa0138fdb1dd7a84a52dffdb89"
 dependencies = [
- "bitflags 2.4.1",
+ "bitflags 2.5.0",
  "errno",
  "libc",
  "linux-raw-sys",
- "windows-sys",
+ "windows-sys 0.52.0",
 ]
 
 [[package]]
 name = "ryu"
-version = "1.0.15"
+version = "1.0.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1ad4cc8da4ef723ed60bced201181d83791ad433213d8c24efffda1eec85d741"
+checksum = "e86697c916019a8588c99b5fac3cead74ec0b4b819707a682fd4d23fa0ce1ba1"
 
 [[package]]
 name = "same-file"
@@ -689,33 +735,27 @@ dependencies = [
 
 [[package]]
 name = "schannel"
-version = "0.1.22"
+version = "0.1.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0c3733bf4cf7ea0880754e19cb5a462007c4a8c1914bff372ccc95b464f1df88"
+checksum = "fbc91545643bcf3a0bbb6569265615222618bdf33ce4ffbbd13c4bbd4c093534"
 dependencies = [
- "windows-sys",
+ "windows-sys 0.52.0",
 ]
 
-[[package]]
-name = "scopeguard"
-version = "1.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "94143f37725109f92c262ed2cf5e59bce7498c01bcc1502d7b9afe439a4e9f49"
-
 [[package]]
 name = "serde"
-version = "1.0.193"
+version = "1.0.198"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "25dd9975e68d0cb5aa1120c288333fc98731bd1dd12f561e468ea4728c042b89"
+checksum = "9846a40c979031340571da2545a4e5b7c4163bdae79b301d5f86d03979451fcc"
 dependencies = [
  "serde_derive",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.193"
+version = "1.0.198"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "43576ca501357b9b071ac53cdc7da8ef0cbd9493d8df094cd821777ea6e894d3"
+checksum = "e88edab869b01783ba905e7d0153f9fc1a6505a96e4ad3018011eedb838566d9"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -724,9 +764,9 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.108"
+version = "1.0.116"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3d1c7e3eac408d115102c4c24ad393e0821bb3a5df4d506a80f85f7a742a526b"
+checksum = "3e17db7126d17feb94eb3fad46bf1a96b034e8aacbc2e775fe81505f8b0b2813"
 dependencies = [
  "itoa",
  "ryu",
@@ -777,19 +817,25 @@ dependencies = [
 
 [[package]]
 name = "socket2"
-version = "0.4.10"
+version = "0.5.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9f7916fc008ca5542385b89a3d3ce689953c143e9304a9bf8beec1de48994c0d"
+checksum = "05ffd9c0a93b7543e062e759284fcf5f5e3b098501104bfbdde4d404db792871"
 dependencies = [
  "libc",
- "winapi",
+ "windows-sys 0.52.0",
 ]
 
 [[package]]
-name = "syn"
-version = "2.0.39"
+name = "symlink"
+version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "23e78b90f2fcf45d3e842032ce32e3f2d1545ba6636271dcbf24fa306d87be7a"
+checksum = "a7973cce6668464ea31f176d85b13c7ab3bba2cb3b77a2ed26abd7801688010a"
+
+[[package]]
+name = "syn"
+version = "2.0.59"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4a6531ffc7b071655e4ce2e04bd464c4830bb585a61cabb96cf808f05172615a"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -798,24 +844,34 @@ dependencies = [
 
 [[package]]
 name = "tempfile"
-version = "3.8.1"
+version = "3.10.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7ef1adac450ad7f4b3c28589471ade84f25f731a7a0fe30d71dfa9f60fd808e5"
+checksum = "85b77fafb263dd9d05cbeac119526425676db3784113aa9295c88498cbf8bff1"
 dependencies = [
  "cfg-if",
- "fastrand 2.0.1",
- "redox_syscall",
+ "fastrand 2.0.2",
  "rustix",
- "windows-sys",
+ "windows-sys 0.52.0",
 ]
 
 [[package]]
-name = "termcolor"
-version = "1.4.0"
+name = "thiserror"
+version = "1.0.58"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ff1bc3d3f05aff0403e8ac0d92ced918ec05b666a43f83297ccef5bea8a3d449"
+checksum = "03468839009160513471e86a034bb2c5c0e4baae3b43f79ffc55c4a5427b3297"
 dependencies = [
- "winapi-util",
+ "thiserror-impl",
+]
+
+[[package]]
+name = "thiserror-impl"
+version = "1.0.58"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c61f3ba182994efc43764a46c018c347bc492c79f024e705f46567b418f6d4f7"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
 ]
 
 [[package]]
@@ -883,9 +939,9 @@ checksum = "42ff0bf0c66b8238c6f3b578df37d0b7848e55df8577b3f74f92a69acceeb825"
 
 [[package]]
 name = "unicode-bidi"
-version = "0.3.13"
+version = "0.3.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "92888ba5573ff080736b3648696b70cafad7d250551175acbaa4e0385b3e1460"
+checksum = "08f95100a766bf4f8f28f90d77e0a5461bbdb219042e7679bebe79004fed8d75"
 
 [[package]]
 name = "unicode-ident"
@@ -895,18 +951,18 @@ checksum = "3354b9ac3fae1ff6755cb6db53683adb661634f67557942dea4facebec0fee4b"
 
 [[package]]
 name = "unicode-normalization"
-version = "0.1.22"
+version = "0.1.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5c5713f0fc4b5db668a2ac63cdb7bb4469d8c9fed047b1d0292cc7b0ce2ba921"
+checksum = "a56d1686db2308d901306f92a263857ef59ea39678a5458e7cb17f01415101f5"
 dependencies = [
  "tinyvec",
 ]
 
 [[package]]
 name = "url"
-version = "2.4.1"
+version = "2.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "143b538f18257fac9cad154828a57c6bf5157e1aa604d4816b5995bf6de87ae5"
+checksum = "31e6302e3bb753d46e83516cae55ae196fc0c309407cf11ab35cc51a4c2a4633"
 dependencies = [
  "form_urlencoded",
  "idna",
@@ -914,6 +970,12 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "utf8parse"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "711b9620af191e0cdc7468a8d14e709c3dcdb115b36f838e601583af800a370a"
+
 [[package]]
 name = "vcpkg"
 version = "0.2.15"
@@ -934,9 +996,9 @@ checksum = "f3c4517f54858c779bbcbf228f4fca63d121bf85fbecb2dc578cdf4a39395690"
 
 [[package]]
 name = "walkdir"
-version = "2.4.0"
+version = "2.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d71d857dc86794ca4c280d616f7da00d2dbfd8cd788846559a6813e6aa4b54ee"
+checksum = "29790946404f91d9c5d06f9874efddea1dc06c5efe94541a7d6863108e3a5e4b"
 dependencies = [
  "same-file",
  "winapi-util",
@@ -985,7 +1047,16 @@ version = "0.48.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "677d2418bec65e3338edb076e806bc1ec15693c5d0104683f2efe857f61056a9"
 dependencies = [
- "windows-targets",
+ "windows-targets 0.48.5",
+]
+
+[[package]]
+name = "windows-sys"
+version = "0.52.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "282be5f36a8ce781fad8c8ae18fa3f9beff57ec1b52cb3de0789201425d9a33d"
+dependencies = [
+ "windows-targets 0.52.5",
 ]
 
 [[package]]
@@ -994,13 +1065,29 @@ version = "0.48.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9a2fa6e2155d7247be68c096456083145c183cbbbc2764150dda45a87197940c"
 dependencies = [
- "windows_aarch64_gnullvm",
- "windows_aarch64_msvc",
- "windows_i686_gnu",
- "windows_i686_msvc",
- "windows_x86_64_gnu",
- "windows_x86_64_gnullvm",
- "windows_x86_64_msvc",
+ "windows_aarch64_gnullvm 0.48.5",
+ "windows_aarch64_msvc 0.48.5",
+ "windows_i686_gnu 0.48.5",
+ "windows_i686_msvc 0.48.5",
+ "windows_x86_64_gnu 0.48.5",
+ "windows_x86_64_gnullvm 0.48.5",
+ "windows_x86_64_msvc 0.48.5",
+]
+
+[[package]]
+name = "windows-targets"
+version = "0.52.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6f0713a46559409d202e70e28227288446bf7841d3211583a4b53e3f6d96e7eb"
+dependencies = [
+ "windows_aarch64_gnullvm 0.52.5",
+ "windows_aarch64_msvc 0.52.5",
+ "windows_i686_gnu 0.52.5",
+ "windows_i686_gnullvm",
+ "windows_i686_msvc 0.52.5",
+ "windows_x86_64_gnu 0.52.5",
+ "windows_x86_64_gnullvm 0.52.5",
+ "windows_x86_64_msvc 0.52.5",
 ]
 
 [[package]]
@@ -1009,38 +1096,86 @@ version = "0.48.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2b38e32f0abccf9987a4e3079dfb67dcd799fb61361e53e2882c3cbaf0d905d8"
 
+[[package]]
+name = "windows_aarch64_gnullvm"
+version = "0.52.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7088eed71e8b8dda258ecc8bac5fb1153c5cffaf2578fc8ff5d61e23578d3263"
+
 [[package]]
 name = "windows_aarch64_msvc"
 version = "0.48.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dc35310971f3b2dbbf3f0690a219f40e2d9afcf64f9ab7cc1be722937c26b4bc"
 
+[[package]]
+name = "windows_aarch64_msvc"
+version = "0.52.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9985fd1504e250c615ca5f281c3f7a6da76213ebd5ccc9561496568a2752afb6"
+
 [[package]]
 name = "windows_i686_gnu"
 version = "0.48.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a75915e7def60c94dcef72200b9a8e58e5091744960da64ec734a6c6e9b3743e"
 
+[[package]]
+name = "windows_i686_gnu"
+version = "0.52.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "88ba073cf16d5372720ec942a8ccbf61626074c6d4dd2e745299726ce8b89670"
+
+[[package]]
+name = "windows_i686_gnullvm"
+version = "0.52.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "87f4261229030a858f36b459e748ae97545d6f1ec60e5e0d6a3d32e0dc232ee9"
+
 [[package]]
 name = "windows_i686_msvc"
 version = "0.48.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8f55c233f70c4b27f66c523580f78f1004e8b5a8b659e05a4eb49d4166cca406"
 
+[[package]]
+name = "windows_i686_msvc"
+version = "0.52.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "db3c2bf3d13d5b658be73463284eaf12830ac9a26a90c717b7f771dfe97487bf"
+
 [[package]]
 name = "windows_x86_64_gnu"
 version = "0.48.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "53d40abd2583d23e4718fddf1ebec84dbff8381c07cae67ff7768bbf19c6718e"
 
+[[package]]
+name = "windows_x86_64_gnu"
+version = "0.52.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4e4246f76bdeff09eb48875a0fd3e2af6aada79d409d33011886d3e1581517d9"
+
 [[package]]
 name = "windows_x86_64_gnullvm"
 version = "0.48.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0b7b52767868a23d5bab768e390dc5f5c55825b6d30b86c844ff2dc7414044cc"
 
+[[package]]
+name = "windows_x86_64_gnullvm"
+version = "0.52.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "852298e482cd67c356ddd9570386e2862b5673c85bd5f88df9ab6802b334c596"
+
 [[package]]
 name = "windows_x86_64_msvc"
 version = "0.48.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ed94fce61571a4006852b7389a063ab983c02eb1bb37b47f8272ce92d06d9538"
+
+[[package]]
+name = "windows_x86_64_msvc"
+version = "0.52.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bec47e5bfd1bff0eeaf6d8b485cc1074891a197ab4225d504cb7a1ab88b02bf0"
diff --git a/pkgs/build-support/node/fetch-npm-deps/Cargo.toml b/pkgs/build-support/node/fetch-npm-deps/Cargo.toml
index ea121c510c95..bb164bc6a983 100644
--- a/pkgs/build-support/node/fetch-npm-deps/Cargo.toml
+++ b/pkgs/build-support/node/fetch-npm-deps/Cargo.toml
@@ -6,18 +6,19 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-anyhow = "1.0.75"
+anyhow = "1.0.82"
 backoff = "0.4.0"
-base64 = "0.21.5"
+base64 = "0.22.0"
 digest = "0.10.7"
-env_logger = "0.10.1"
+env_logger = "0.11.3"
 isahc = { version = "1.7.2", default_features = false }
-log = "0.4.20"
-rayon = "1.8.0"
-serde = { version = "1.0.193", features = ["derive"] }
-serde_json = "1.0.108"
+log = "0.4.21"
+nix-nar = "0.3.0"
+rayon = "1.10.0"
+serde = { version = "1.0.198", features = ["derive"] }
+serde_json = "1.0.116"
 sha1 = "0.10.6"
 sha2 = "0.10.8"
-tempfile = "3.8.1"
-url = { version = "2.4.1", features = ["serde"] }
-walkdir = "2.4.0"
+tempfile = "3.10.1"
+url = { version = "2.5.0", features = ["serde"] }
+walkdir = "2.5.0"
diff --git a/pkgs/build-support/node/fetch-npm-deps/default.nix b/pkgs/build-support/node/fetch-npm-deps/default.nix
index 373d63cc59b8..d86fc90c6c7d 100644
--- a/pkgs/build-support/node/fetch-npm-deps/default.nix
+++ b/pkgs/build-support/node/fetch-npm-deps/default.nix
@@ -1,4 +1,4 @@
-{ lib, stdenvNoCC, rustPlatform, makeWrapper, pkg-config, curl, gnutar, gzip, nix, testers, fetchurl, cacert, prefetch-npm-deps, fetchNpmDeps }:
+{ lib, stdenvNoCC, rustPlatform, makeWrapper, pkg-config, curl, gnutar, gzip, testers, fetchurl, cacert, prefetch-npm-deps, fetchNpmDeps }:
 
 {
   prefetch-npm-deps = rustPlatform.buildRustPackage {
@@ -20,7 +20,7 @@
     buildInputs = [ curl ];
 
     postInstall = ''
-      wrapProgram "$out/bin/prefetch-npm-deps" --prefix PATH : ${lib.makeBinPath [ gnutar gzip nix ]}
+      wrapProgram "$out/bin/prefetch-npm-deps" --prefix PATH : ${lib.makeBinPath [ gnutar gzip ]}
     '';
 
     passthru.tests =
diff --git a/pkgs/build-support/node/fetch-npm-deps/src/cacache.rs b/pkgs/build-support/node/fetch-npm-deps/src/cacache.rs
index c49c094b85c6..8c6845d6ac5a 100644
--- a/pkgs/build-support/node/fetch-npm-deps/src/cacache.rs
+++ b/pkgs/build-support/node/fetch-npm-deps/src/cacache.rs
@@ -11,6 +11,7 @@ use std::{
 };
 use url::Url;
 
+#[allow(clippy::struct_field_names)]
 #[derive(Serialize, Deserialize)]
 pub(super) struct Key {
     pub(super) key: String,
diff --git a/pkgs/build-support/node/fetch-npm-deps/src/main.rs b/pkgs/build-support/node/fetch-npm-deps/src/main.rs
index dc20c7297049..cb06d32600e8 100644
--- a/pkgs/build-support/node/fetch-npm-deps/src/main.rs
+++ b/pkgs/build-support/node/fetch-npm-deps/src/main.rs
@@ -8,7 +8,7 @@ use std::{
     collections::HashMap,
     env, fs,
     path::{Path, PathBuf},
-    process::{self, Command},
+    process,
 };
 use tempfile::tempdir;
 use url::Url;
@@ -266,10 +266,7 @@ fn main() -> anyhow::Result<()> {
     fs::write(out.join("package-lock.json"), lock_content)?;
 
     if print_hash {
-        Command::new("nix")
-            .args(["--experimental-features", "nix-command", "hash", "path"])
-            .arg(out.as_os_str())
-            .status()?;
+        println!("{}", util::make_sri_hash(out)?);
     }
 
     Ok(())
diff --git a/pkgs/build-support/node/fetch-npm-deps/src/parse/lock.rs b/pkgs/build-support/node/fetch-npm-deps/src/parse/lock.rs
index c6e77153a0b8..49bba8780c97 100644
--- a/pkgs/build-support/node/fetch-npm-deps/src/parse/lock.rs
+++ b/pkgs/build-support/node/fetch-npm-deps/src/parse/lock.rs
@@ -179,7 +179,7 @@ impl fmt::Display for Hash {
     }
 }
 
-#[allow(clippy::incorrect_partial_ord_impl_on_ord_type)]
+#[allow(clippy::non_canonical_partial_ord_impl)]
 impl PartialOrd for Hash {
     fn partial_cmp(&self, other: &Hash) -> Option<Ordering> {
         let lhs = self.0.split_once('-')?.0;
diff --git a/pkgs/build-support/node/fetch-npm-deps/src/util.rs b/pkgs/build-support/node/fetch-npm-deps/src/util.rs
index 7dd928fdc43f..76f15db03d46 100644
--- a/pkgs/build-support/node/fetch-npm-deps/src/util.rs
+++ b/pkgs/build-support/node/fetch-npm-deps/src/util.rs
@@ -1,10 +1,18 @@
 use backoff::{retry, ExponentialBackoff};
+use base64::prelude::{Engine, BASE64_STANDARD};
+use digest::Digest;
 use isahc::{
     config::{CaCertificate, Configurable, RedirectPolicy, SslOption},
     Body, Request, RequestExt,
 };
+use nix_nar::{Encoder, NarError};
 use serde_json::{Map, Value};
-use std::{env, io::Read, path::Path};
+use sha2::Sha256;
+use std::{
+    env,
+    io::{self, Read},
+    path::Path,
+};
 use url::Url;
 
 pub fn get_url(url: &Url) -> Result<Body, isahc::Error> {
@@ -64,3 +72,15 @@ pub fn get_url_body_with_retry(url: &Url) -> Result<Vec<u8>, isahc::Error> {
         } => err,
     })
 }
+
+pub fn make_sri_hash(path: &Path) -> Result<String, NarError> {
+    let mut encoder = Encoder::new(path)?;
+    let mut hasher = Sha256::new();
+
+    io::copy(&mut encoder, &mut hasher)?;
+
+    Ok(format!(
+        "sha256-{}",
+        BASE64_STANDARD.encode(hasher.finalize())
+    ))
+}