diff --git a/tvix/tools/narinfo2parquet/Cargo.lock b/tvix/tools/narinfo2parquet/Cargo.lock
index 88809eb57..ffb34b808 100644
--- a/tvix/tools/narinfo2parquet/Cargo.lock
+++ b/tvix/tools/narinfo2parquet/Cargo.lock
@@ -816,6 +816,16 @@ version = "0.2.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4ec2a862134d2a7d32d7983ddcdd1c4923530833c9f2ea1a44fc5fa473989058"
 
+[[package]]
+name = "libmimalloc-sys"
+version = "0.1.39"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "23aa6811d3bd4deb8a84dde645f943476d13b248d818edcf8ce0b2f37f036b44"
+dependencies = [
+ "cc",
+ "libc",
+]
+
 [[package]]
 name = "linux-raw-sys"
 version = "0.4.10"
@@ -872,6 +882,15 @@ dependencies = [
  "autocfg",
 ]
 
+[[package]]
+name = "mimalloc"
+version = "0.1.43"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "68914350ae34959d83f732418d51e2427a794055d0b9529f48259ac07af65633"
+dependencies = [
+ "libmimalloc-sys",
+]
+
 [[package]]
 name = "minimal-lexical"
 version = "0.2.1"
@@ -943,6 +962,7 @@ dependencies = [
  "ed25519-dalek",
  "enum-primitive-derive",
  "glob",
+ "mimalloc",
  "nom",
  "num-traits",
  "pin-project-lite",
diff --git a/tvix/tools/narinfo2parquet/Cargo.nix b/tvix/tools/narinfo2parquet/Cargo.nix
index d00ceaf4f..a8437c189 100644
--- a/tvix/tools/narinfo2parquet/Cargo.nix
+++ b/tvix/tools/narinfo2parquet/Cargo.nix
@@ -207,6 +207,7 @@ rec {
         edition = "2015";
         crateBin = [ ];
         sha256 = "1cy6r2sfv5y5cigv86vms7n5nlwhx1rbyxwcraqnmm1rxiib2yyc";
+        libName = "alloc_no_stdlib";
         authors = [
           "Daniel Reiter Horn <danielrh@dropbox.com>"
         ];
@@ -218,6 +219,7 @@ rec {
         edition = "2015";
         crateBin = [ ];
         sha256 = "1kkfbld20ab4165p29v172h8g0wvq8i06z8vnng14whw0isq5ywl";
+        libName = "alloc_stdlib";
         authors = [
           "Daniel Reiter Horn <danielrh@dropbox.com>"
         ];
@@ -234,6 +236,7 @@ rec {
         version = "0.2.16";
         edition = "2018";
         sha256 = "1iayppgq4wqbfbfcqmsbwgamj0s65012sskfvyx07pxavk3gyhh9";
+        libName = "allocator_api2";
         authors = [
           "Zakarum <zaq.dev@icloud.com>"
         ];
@@ -249,6 +252,7 @@ rec {
         version = "0.1.1";
         edition = "2018";
         sha256 = "1w7ynjxrfs97xg3qlcdns4kgfpwcdv824g611fq32cag4cdr96g9";
+        libName = "android_tzdata";
         authors = [
           "RumovZ"
         ];
@@ -320,6 +324,7 @@ rec {
         version = "0.2.0";
         edition = "2021";
         sha256 = "0xpbqf7qkvzplpjd7f0wbcf2n1v9vygdccwxkd1amxp4il0hlzdz";
+        libName = "array_init_cursor";
 
       };
       "arrow-format" = rec {
@@ -327,6 +332,7 @@ rec {
         version = "0.8.1";
         edition = "2018";
         sha256 = "1irj67p6c224dzw86jr7j3z9r5zfid52gy6ml8rdqk4r2si4x207";
+        libName = "arrow_format";
         authors = [
           "Jorge C. Leitao <jorgecarleitao@gmail.com>"
         ];
@@ -362,6 +368,7 @@ rec {
         version = "0.3.5";
         edition = "2018";
         sha256 = "0l8sjq1rylkb1ak0pdyjn83b3k6x36j22myngl4sqqgg7whdsmnd";
+        libName = "async_stream";
         authors = [
           "Carl Lerche <me@carllerche.com>"
         ];
@@ -387,6 +394,7 @@ rec {
         edition = "2018";
         sha256 = "14q179j4y8p2z1d0ic6aqgy9fhwz8p9cai1ia8kpw4bw7q12mrhn";
         procMacro = true;
+        libName = "async_stream_impl";
         authors = [
           "Carl Lerche <me@carllerche.com>"
         ];
@@ -413,6 +421,7 @@ rec {
         edition = "2021";
         sha256 = "1ydhbsqjqqa6bxbv0kgys2wq2vi3jpwjy57dk162ajwppgqkfrd6";
         procMacro = true;
+        libName = "async_trait";
         authors = [
           "David Tolnay <dtolnay@gmail.com>"
         ];
@@ -605,6 +614,7 @@ rec {
         version = "0.10.4";
         edition = "2018";
         sha256 = "0w9sa2ypmrsqqvc20nhwr75wbb5cjr4kkyhpjm1z1lv2kdicfy1h";
+        libName = "block_buffer";
         authors = [
           "RustCrypto Developers"
         ];
@@ -660,6 +670,7 @@ rec {
         edition = "2015";
         crateBin = [ ];
         sha256 = "0kyyh9701dwqzwvn2frff4ww0zibikqd1s1xvl7n1pfpc3z4lbjf";
+        libName = "brotli_decompressor";
         authors = [
           "Daniel Reiter Horn <danielrh@dropbox.com>"
           "The Brotli Authors"
@@ -828,6 +839,7 @@ rec {
         version = "1.0.0";
         edition = "2018";
         sha256 = "1za0vb97n4brpzpv8lsbnzmq5r8f2b0cpqqr0sy8h5bn751xxwds";
+        libName = "cfg_if";
         authors = [
           "Alex Crichton <alex@alexcrichton.com>"
         ];
@@ -892,6 +904,7 @@ rec {
         version = "0.9.5";
         edition = "2021";
         sha256 = "0vxb4d25mgk8y0phay7j078limx2553716ixsr1x5605k31j5h98";
+        libName = "const_oid";
         authors = [
           "RustCrypto Developers"
         ];
@@ -904,6 +917,7 @@ rec {
         version = "0.8.4";
         edition = "2015";
         sha256 = "1yhf471qj6snnm2mcswai47vsbc9w30y4abmdp4crb4av87sb5p4";
+        libName = "core_foundation_sys";
         authors = [
           "The Servo Project Developers"
         ];
@@ -966,6 +980,7 @@ rec {
         version = "0.5.8";
         edition = "2018";
         sha256 = "004jz4wxp9k26z657i7rsh9s7586dklx2c5aqf1n3w1dgzvjng53";
+        libName = "crossbeam_channel";
         dependencies = [
           {
             name = "cfg-if";
@@ -990,6 +1005,7 @@ rec {
         version = "0.8.3";
         edition = "2018";
         sha256 = "1vqczbcild7nczh5z116w8w46z991kpjyw7qxkf24c14apwdcvyf";
+        libName = "crossbeam_deque";
         dependencies = [
           {
             name = "cfg-if";
@@ -1021,6 +1037,7 @@ rec {
         version = "0.9.15";
         edition = "2018";
         sha256 = "1ixwc3cq816wb8rlh3ix4jnybqbyyq4l61nwlx0mfm3ck0s148df";
+        libName = "crossbeam_epoch";
         dependencies = [
           {
             name = "cfg-if";
@@ -1061,6 +1078,7 @@ rec {
         version = "0.3.8";
         edition = "2018";
         sha256 = "1p9s6n4ckwdgxkb7a8ay9zjzmgc8ppfbxix2vr07rwskibmb7kyi";
+        libName = "crossbeam_queue";
         dependencies = [
           {
             name = "cfg-if";
@@ -1084,6 +1102,7 @@ rec {
         version = "0.8.16";
         edition = "2018";
         sha256 = "153j0gikblz7n7qdvdi8pslhi008s1yp9cmny6vw07ad7pbb48js";
+        libName = "crossbeam_utils";
         dependencies = [
           {
             name = "cfg-if";
@@ -1101,6 +1120,7 @@ rec {
         version = "0.1.6";
         edition = "2018";
         sha256 = "1cvby95a6xg7kxdz5ln3rl9xh66nz66w46mm3g56ri1z5x815yqv";
+        libName = "crypto_common";
         authors = [
           "RustCrypto Developers"
         ];
@@ -1126,6 +1146,7 @@ rec {
         version = "4.1.1";
         edition = "2021";
         sha256 = "0p7ns5917k6369gajrsbfj24llc5zfm635yh3abla7sb5rm8r6z8";
+        libName = "curve25519_dalek";
         authors = [
           "Isis Lovecruft <isis@patternsinthevoid.net>"
           "Henry de Valence <hdevalence@hdevalence.ca>"
@@ -1198,6 +1219,7 @@ rec {
         edition = "2021";
         sha256 = "1cry71xxrr0mcy5my3fb502cwfxy6822k4pm19cwrilrg7hq4s7l";
         procMacro = true;
+        libName = "curve25519_dalek_derive";
         dependencies = [
           {
             name = "proc-macro2";
@@ -1220,6 +1242,7 @@ rec {
         version = "2.6.0";
         edition = "2018";
         sha256 = "1qnn68n4vragxaxlkqcb1r28d3hhj43wch67lm4rpxlw89wnjmp8";
+        libName = "data_encoding";
         authors = [
           "Julien Cretin <git@ia0.eu>"
         ];
@@ -1303,6 +1326,7 @@ rec {
         version = "1.0.16";
         edition = "2018";
         sha256 = "0pa9kas6a241pbx0q82ipwi4f7m7wwyzkkc725caky24gl4j4nsl";
+        libName = "dyn_clone";
         authors = [
           "David Tolnay <dtolnay@gmail.com>"
         ];
@@ -1345,6 +1369,7 @@ rec {
         version = "2.1.0";
         edition = "2021";
         sha256 = "1h13qm789m9gdjl6jazss80hqi8ll37m0afwcnw23zcbqjp8wqhz";
+        libName = "ed25519_dalek";
         authors = [
           "isis lovecruft <isis@patternsinthevoid.net>"
           "Tony Arcieri <bascule@gmail.com>"
@@ -1437,6 +1462,7 @@ rec {
         edition = "2018";
         sha256 = "0k6wcf58h5kh64yq5nfq71va53kaya0kzxwsjwbgwm2n2zd9axxs";
         procMacro = true;
+        libName = "enum_primitive_derive";
         authors = [
           "Doug Goldstein <cardoe@cardoe.com>"
         ];
@@ -1553,6 +1579,7 @@ rec {
         version = "0.1.9";
         edition = "2015";
         sha256 = "0nj6j26p71bjy8h42x6jahx1hn0ng6mc2miwpgwnp8vnwqf4jq3k";
+        libName = "fallible_streaming_iterator";
         authors = [
           "Steven Fackler <sfackler@gmail.com>"
         ];
@@ -1563,6 +1590,7 @@ rec {
         version = "0.2.0";
         edition = "2018";
         sha256 = "0g7kfll3xyh99kc7r352lhljnwvgayxxa6saifb6725inikmyxlm";
+        libName = "fast_float";
         authors = [
           "Ivan Smirnov <i.s.smirnov@gmail.com>"
         ];
@@ -1592,6 +1620,7 @@ rec {
         version = "0.2.5";
         edition = "2018";
         sha256 = "1dxn0g50pv0ppal779vi7k40fr55pbhkyv4in7i13pgl4sn3wmr7";
+        libName = "fiat_crypto";
         authors = [
           "Fiat Crypto library authors <jgross@mit.edu>"
         ];
@@ -1721,6 +1750,7 @@ rec {
         version = "0.3.29";
         edition = "2018";
         sha256 = "1jxsifvrbqzdadk0svbax71cba5d3qg3wgjq8i160mxmd1kdckgz";
+        libName = "futures_channel";
         dependencies = [
           {
             name = "futures-core";
@@ -1748,6 +1778,7 @@ rec {
         version = "0.3.29";
         edition = "2018";
         sha256 = "1308bpj0g36nhx2y6bl4mm6f1gnh9xyvvw2q2wpdgnb6dv3247gb";
+        libName = "futures_core";
         features = {
           "default" = [ "std" ];
           "portable-atomic" = [ "dep:portable-atomic" ];
@@ -1760,6 +1791,7 @@ rec {
         version = "0.3.29";
         edition = "2018";
         sha256 = "1g4pjni0sw28djx6mlcfz584abm2lpifz86cmng0kkxh7mlvhkqg";
+        libName = "futures_executor";
         dependencies = [
           {
             name = "futures-core";
@@ -1790,6 +1822,7 @@ rec {
         version = "0.3.29";
         edition = "2018";
         sha256 = "1ajsljgny3zfxwahba9byjzclrgvm1ypakca8z854k2w7cb4mwwb";
+        libName = "futures_io";
         features = {
           "default" = [ "std" ];
         };
@@ -1801,6 +1834,7 @@ rec {
         edition = "2018";
         sha256 = "1nwd18i8kvpkdfwm045hddjli0n96zi7pn6f99zi9c74j7ym7cak";
         procMacro = true;
+        libName = "futures_macro";
         dependencies = [
           {
             name = "proc-macro2";
@@ -1823,6 +1857,7 @@ rec {
         version = "0.3.29";
         edition = "2018";
         sha256 = "05q8jykqddxzp8nwf00wjk5m5mqi546d7i8hsxma7hiqxrw36vg3";
+        libName = "futures_sink";
         features = {
           "default" = [ "std" ];
           "std" = [ "alloc" ];
@@ -1834,6 +1869,7 @@ rec {
         version = "0.3.29";
         edition = "2018";
         sha256 = "1qmsss8rb5ppql4qvd4r70h9gpfcpd0bg2b3qilxrnhdkc397lgg";
+        libName = "futures_task";
         features = {
           "default" = [ "std" ];
           "std" = [ "alloc" ];
@@ -1845,6 +1881,7 @@ rec {
         version = "0.3.29";
         edition = "2018";
         sha256 = "0141rkqh0psj4h8x8lgsl1p29dhqr7z2wcixkcbs60z74kb2d5d1";
+        libName = "futures_util";
         dependencies = [
           {
             name = "futures-channel";
@@ -2098,6 +2135,7 @@ rec {
         version = "0.3.3";
         edition = "2021";
         sha256 = "1dyc8qsjh876n74a3rcz8h43s27nj1sypdhsn2ms61bd3b47wzyp";
+        libName = "hermit_abi";
         authors = [
           "Stefan Lankes"
         ];
@@ -2132,6 +2170,7 @@ rec {
         version = "0.1.58";
         edition = "2018";
         sha256 = "081vcr8z8ddhl5r1ywif6grnswk01b2ac4nks2bhn8zzdimvh9l3";
+        libName = "iana_time_zone";
         authors = [
           "Andrew Straw <strawman@astraw.com>"
           "René Kijewski <rene.kijewski@fu-berlin.de>"
@@ -2177,6 +2216,7 @@ rec {
         version = "0.1.2";
         edition = "2018";
         sha256 = "17r6jmj31chn7xs9698r122mapq85mfnv98bb4pg6spm0si2f67k";
+        libName = "iana_time_zone_haiku";
         authors = [
           "René Kijewski <crates.io@k6i.de>"
         ];
@@ -2234,6 +2274,7 @@ rec {
         edition = "2018";
         links = "jemalloc";
         sha256 = "1wpbpwhfs6wd484cdfpl0zdf441ann9wj0fypy67i8ffw531jv5c";
+        libName = "jemalloc_sys";
         authors = [
           "Alex Crichton <alex@alexcrichton.com>"
           "Gonzalo Brito Gadeschi <gonzalobg88@gmail.com>"
@@ -2316,6 +2357,7 @@ rec {
         version = "0.3.65";
         edition = "2018";
         sha256 = "1s1gaxgzpqfyygc7f2pwp9y128rh5f8zvsc4nm5yazgna9cw7h2l";
+        libName = "js_sys";
         authors = [
           "The wasm-bindgen Developers"
         ];
@@ -2357,11 +2399,39 @@ rec {
         };
         resolvedDefaultFeatures = [ "default" ];
       };
+      "libmimalloc-sys" = rec {
+        crateName = "libmimalloc-sys";
+        version = "0.1.39";
+        edition = "2018";
+        links = "mimalloc";
+        sha256 = "0i3b0dzz7cp0ik7ys66q92r16va78gwlbrnxhj5fnkdxsc8niai3";
+        libName = "libmimalloc_sys";
+        authors = [
+          "Octavian Oncescu <octavonce@gmail.com>"
+        ];
+        dependencies = [
+          {
+            name = "libc";
+            packageId = "libc";
+          }
+        ];
+        buildDependencies = [
+          {
+            name = "cc";
+            packageId = "cc";
+          }
+        ];
+        features = {
+          "cty" = [ "dep:cty" ];
+          "extended" = [ "cty" ];
+        };
+      };
       "linux-raw-sys" = rec {
         crateName = "linux-raw-sys";
         version = "0.4.10";
         edition = "2021";
         sha256 = "0gz0671d4hgrdngrryaajxl962ny4g40pykg0vq0pr32q3l7j96s";
+        libName = "linux_raw_sys";
         authors = [
           "Dan Gohman <dev@sunfishcode.online>"
         ];
@@ -2421,6 +2491,7 @@ rec {
         edition = "2015";
         links = "lz4";
         sha256 = "0059ik4xlvnss5qfh6l691psk4g3350ljxaykzv10yr0gqqppljp";
+        libName = "lz4_sys";
         authors = [
           "Jens Heyens <jens.heyens@ewetel.net>"
           "Artem V. Navrotskiy <bozaro@buzzsoft.ru>"
@@ -2497,11 +2568,40 @@ rec {
         features = { };
         resolvedDefaultFeatures = [ "default" ];
       };
+      "mimalloc" = rec {
+        crateName = "mimalloc";
+        version = "0.1.43";
+        edition = "2018";
+        sha256 = "0csnyrxc16i592gm5ffham07jyj2w98qsh9jyy1rv59lmr8474b8";
+        authors = [
+          "Octavian Oncescu <octavonce@gmail.com>"
+          "Vincent Rouillé <vincent@speedy37.fr>"
+          "Thom Chiovoloni <chiovolonit@gmail.com>"
+        ];
+        dependencies = [
+          {
+            name = "libmimalloc-sys";
+            packageId = "libmimalloc-sys";
+            usesDefaultFeatures = false;
+          }
+        ];
+        features = {
+          "debug" = [ "libmimalloc-sys/debug" ];
+          "debug_in_debug" = [ "libmimalloc-sys/debug_in_debug" ];
+          "extended" = [ "libmimalloc-sys/extended" ];
+          "local_dynamic_tls" = [ "libmimalloc-sys/local_dynamic_tls" ];
+          "no_thp" = [ "libmimalloc-sys/no_thp" ];
+          "override" = [ "libmimalloc-sys/override" ];
+          "secure" = [ "libmimalloc-sys/secure" ];
+        };
+        resolvedDefaultFeatures = [ "default" ];
+      };
       "minimal-lexical" = rec {
         crateName = "minimal-lexical";
         version = "0.2.1";
         edition = "2018";
         sha256 = "16ppc5g84aijpri4jzv14rvcnslvlpphbszc7zzp6vfkddf4qdb8";
+        libName = "minimal_lexical";
         authors = [
           "Alex Huszagh <ahuszagh@gmail.com>"
         ];
@@ -2608,6 +2708,7 @@ rec {
         edition = "2021";
         sha256 = "1j1avbxw7jscyi7dmnywhlwbiny1fvg1vpp9fy4dc1pd022kva16";
         procMacro = true;
+        libName = "multiversion_macros";
         authors = [
           "Caleb Zulawski <caleb.zulawski@gmail.com>"
         ];
@@ -2684,6 +2785,7 @@ rec {
         edition = "2021";
         crateBin = [ ];
         src = lib.cleanSourceWith { filter = sourceFilter; src = ../../nix-compat; };
+        libName = "nix_compat";
         dependencies = [
           {
             name = "bitflags";
@@ -2714,6 +2816,10 @@ rec {
             name = "glob";
             packageId = "glob";
           }
+          {
+            name = "mimalloc";
+            packageId = "mimalloc";
+          }
           {
             name = "nom";
             packageId = "nom";
@@ -2752,6 +2858,10 @@ rec {
           }
         ];
         devDependencies = [
+          {
+            name = "mimalloc";
+            packageId = "mimalloc";
+          }
           {
             name = "serde_json";
             packageId = "serde_json";
@@ -2836,6 +2946,7 @@ rec {
         version = "0.2.19";
         edition = "2021";
         sha256 = "0h984rhdkkqd4ny9cif7y2azl3xdfb7768hb9irhpsch4q3gq787";
+        libName = "num_traits";
         authors = [
           "The Rust Project Developers"
         ];
@@ -2935,6 +3046,7 @@ rec {
         version = "0.2.4";
         edition = "2021";
         sha256 = "07wf6wf4jrxlq5p3xldxsnabp7jl06my2qp7kiwy9m3x2r5wac8i";
+        libName = "parquet_format_safe";
         authors = [
           "Apache Thrift contributors <dev@thrift.apache.org>"
           "Jorge Leitao <jorgecarleitao@gmail.com>"
@@ -2964,6 +3076,7 @@ rec {
         version = "2.3.0";
         edition = "2018";
         sha256 = "152slflmparkh27hprw62sph8rv77wckzhwl2dhqk6bf563lfalv";
+        libName = "percent_encoding";
         authors = [
           "The rust-url developers"
         ];
@@ -2978,6 +3091,7 @@ rec {
         version = "0.2.13";
         edition = "2018";
         sha256 = "0n0bwr5qxlf0mhn2xkl36sy55118s9qmvx2yl5f3ixkb007lbywa";
+        libName = "pin_project_lite";
 
       };
       "pin-utils" = rec {
@@ -2985,6 +3099,7 @@ rec {
         version = "0.1.0";
         edition = "2018";
         sha256 = "117ir7vslsl2z1a7qzhws4pd01cg2d3338c47swjyvqv2n60v1wb";
+        libName = "pin_utils";
         authors = [
           "Josef Brandl <mail@josefbrandl.de>"
         ];
@@ -3029,6 +3144,7 @@ rec {
         version = "0.3.27";
         edition = "2015";
         sha256 = "0r39ryh1magcq4cz5g9x88jllsnxnhcqr753islvyk4jp9h2h1r6";
+        libName = "pkg_config";
         authors = [
           "Alex Crichton <alex@alexcrichton.com>"
         ];
@@ -3265,6 +3381,7 @@ rec {
         version = "0.36.2";
         edition = "2021";
         sha256 = "0vxql6amvwyp6qj0w87vm21y33qa0i61pshs4ry7ixwgd4ps0s6f";
+        libName = "polars_arrow";
         authors = [
           "Jorge C. Leitao <jorgecarleitao@gmail.com>"
           "Apache Arrow <dev@arrow.apache.org>"
@@ -3443,6 +3560,7 @@ rec {
         version = "0.36.2";
         edition = "2021";
         sha256 = "1pa4l1w41gdzdff81ih1z05z3gz568k81i6flibbca8v2igvqkxi";
+        libName = "polars_compute";
         authors = [
           "Ritchie Vink <ritchie46@gmail.com>"
         ];
@@ -3482,6 +3600,7 @@ rec {
         version = "0.36.2";
         edition = "2021";
         sha256 = "08sar9h97znpb8ziyvrrvvx28lyzc21vwsd7gvwybjxn6kkyzxfh";
+        libName = "polars_core";
         authors = [
           "Ritchie Vink <ritchie46@gmail.com>"
         ];
@@ -3636,6 +3755,7 @@ rec {
         version = "0.36.2";
         edition = "2021";
         sha256 = "11m80a899kp45b3dz9jbvrn5001hw8izbdp7d2czrswrixwdx5k3";
+        libName = "polars_error";
         authors = [
           "Ritchie Vink <ritchie46@gmail.com>"
         ];
@@ -3672,6 +3792,7 @@ rec {
         version = "0.36.2";
         edition = "2021";
         sha256 = "1smamd34ghlxyxdd4aqdplk7k8xm1l626brmzlc4fvwlx3pmh13x";
+        libName = "polars_io";
         authors = [
           "Ritchie Vink <ritchie46@gmail.com>"
         ];
@@ -3830,6 +3951,7 @@ rec {
         version = "0.36.2";
         edition = "2021";
         sha256 = "1mdml4hs574njb23mb9gl6x92x2bb4vdfzsazkl3ifq516s0awcx";
+        libName = "polars_lazy";
         authors = [
           "Ritchie Vink <ritchie46@gmail.com>"
         ];
@@ -4024,6 +4146,7 @@ rec {
         version = "0.36.2";
         edition = "2021";
         sha256 = "13m7dh4vpdmcah04a7kql933l7y7045f0hybbmgff4dbav2ay29f";
+        libName = "polars_ops";
         authors = [
           "Ritchie Vink <ritchie46@gmail.com>"
         ];
@@ -4175,6 +4298,7 @@ rec {
         version = "0.36.2";
         edition = "2021";
         sha256 = "0gay037sw5hcg2q93pxcfh7krcchl1px8g838d8vhjpnn5klv8kv";
+        libName = "polars_parquet";
         authors = [
           "Jorge C. Leitao <jorgecarleitao@gmail.com>"
           "Apache Arrow <dev@arrow.apache.org>"
@@ -4295,6 +4419,7 @@ rec {
         version = "0.36.2";
         edition = "2021";
         sha256 = "00217q51mnq7i57k3sax293xnwghm5hridbpgl11fffcfg8fmdyr";
+        libName = "polars_pipe";
         authors = [
           "Ritchie Vink <ritchie46@gmail.com>"
         ];
@@ -4408,6 +4533,7 @@ rec {
         version = "0.36.2";
         edition = "2021";
         sha256 = "1l5ca38v7ksq4595wdr6wsd74pdgszwivq9y8wfc6l6h4ib1fjiq";
+        libName = "polars_plan";
         authors = [
           "Ritchie Vink <ritchie46@gmail.com>"
         ];
@@ -4596,6 +4722,7 @@ rec {
         version = "0.36.2";
         edition = "2021";
         sha256 = "0by7x6jlj5dwr3f1gj49v8w65l3kpqhwhzb9qzlv6gdqrdx2ycij";
+        libName = "polars_row";
         authors = [
           "Ritchie Vink <ritchie46@gmail.com>"
         ];
@@ -4625,6 +4752,7 @@ rec {
         version = "0.36.2";
         edition = "2021";
         sha256 = "1dcmm993gycw75a6c5hxcr6h2cy6fa2r3hsbx19h9zgxvxnlq2wz";
+        libName = "polars_sql";
         authors = [
           "Ritchie Vink <ritchie46@gmail.com>"
         ];
@@ -4689,6 +4817,7 @@ rec {
         version = "0.36.2";
         edition = "2021";
         sha256 = "1l24fmpv5v1qshxfd4592z8x6bnjlwy4njhf9rcbdlbbr6gn9qny";
+        libName = "polars_time";
         authors = [
           "Ritchie Vink <ritchie46@gmail.com>"
         ];
@@ -4767,6 +4896,7 @@ rec {
         version = "0.36.2";
         edition = "2021";
         sha256 = "1nmvfqwyzbaxcw457amspz479y5vcnpalq043awxfixdfx5clx5i";
+        libName = "polars_utils";
         authors = [
           "Ritchie Vink <ritchie46@gmail.com>"
         ];
@@ -4834,6 +4964,7 @@ rec {
         version = "0.2.17";
         edition = "2018";
         sha256 = "1pp6g52aw970adv3x2310n7glqnji96z0a9wiamzw89ibf0ayh2v";
+        libName = "ppv_lite86";
         authors = [
           "The CryptoCorrosion Contributors"
         ];
@@ -4847,6 +4978,7 @@ rec {
         version = "1.0.69";
         edition = "2021";
         sha256 = "1nljgyllbm3yr3pa081bf83gxh6l4zvjqzaldw7v4mj9xfgihk0k";
+        libName = "proc_macro2";
         authors = [
           "David Tolnay <dtolnay@gmail.com>"
           "Alex Crichton <alex@alexcrichton.com>"
@@ -5048,6 +5180,7 @@ rec {
         edition = "2021";
         links = "rayon-core";
         sha256 = "1vaq0q71yfvcwlmia0iqf6ixj2fibjcf2xjy92n1m1izv1mgpqsw";
+        libName = "rayon_core";
         authors = [
           "Niko Matsakis <niko@alum.mit.edu>"
           "Josh Stone <cuviper@gmail.com>"
@@ -5145,6 +5278,7 @@ rec {
         version = "0.4.3";
         edition = "2021";
         sha256 = "0gs8q9yhd3kcg4pr00ag4viqxnh5l7jpyb9fsfr8hzh451w4r02z";
+        libName = "regex_automata";
         authors = [
           "The Rust Project Developers"
           "Andrew Gallant <jamslam@gmail.com>"
@@ -5205,6 +5339,7 @@ rec {
         version = "0.8.2";
         edition = "2021";
         sha256 = "17rd2s8xbiyf6lb4aj2nfi44zqlj98g2ays8zzj2vfs743k79360";
+        libName = "regex_syntax";
         authors = [
           "The Rust Project Developers"
           "Andrew Gallant <jamslam@gmail.com>"
@@ -5221,6 +5356,7 @@ rec {
         version = "0.1.23";
         edition = "2015";
         sha256 = "0xnbk2bmyzshacjm2g1kd4zzv2y2az14bw3sjccq5qkpmsfvn9nn";
+        libName = "rustc_demangle";
         authors = [
           "Alex Crichton <alex@alexcrichton.com>"
         ];
@@ -5412,6 +5548,7 @@ rec {
         edition = "2018";
         sha256 = "1d50kbaslrrd0374ivx15jg57f03y5xzil1wd2ajlvajzlkbzw53";
         procMacro = true;
+        libName = "seq_macro";
         authors = [
           "David Tolnay <dtolnay@gmail.com>"
         ];
@@ -5755,6 +5892,7 @@ rec {
         version = "0.1.2";
         edition = "2018";
         sha256 = "1wscqj3s30qknda778wf7z99mknk65p0h9hhs658l4pvkfqw6v5z";
+        libName = "streaming_decompression";
         dependencies = [
           {
             name = "fallible-streaming-iterator";
@@ -5768,6 +5906,7 @@ rec {
         version = "0.1.9";
         edition = "2021";
         sha256 = "0845zdv8qb7zwqzglpqc0830i43xh3fb6vqms155wz85qfvk28ib";
+        libName = "streaming_iterator";
         authors = [
           "Steven Fackler <sfackler@gmail.com>"
         ];
@@ -5954,6 +6093,7 @@ rec {
         version = "0.1.5";
         edition = "2021";
         sha256 = "1gb974chm9aj8ifkyibylxkyb5an4bf5y8dxb18pqmck698gmdfg";
+        libName = "target_features";
         authors = [
           "Caleb Zulawski <caleb.zulawski@gmail.com>"
         ];
@@ -6004,6 +6144,7 @@ rec {
         version = "0.3.4";
         edition = "2018";
         sha256 = "1xksx1l1019k9q0az9mhqsgb14w0vm88yax30iq6178s3d9yhjx7";
+        libName = "tempfile_fast";
         authors = [
           "Chris West (Faux) <git@goeswhere.com>"
         ];
@@ -6046,6 +6187,7 @@ rec {
         edition = "2021";
         sha256 = "1f0lmam4765sfnwr4b1n00y14vxh10g0311mkk0adr80pi02wsr6";
         procMacro = true;
+        libName = "thiserror_impl";
         authors = [
           "David Tolnay <dtolnay@gmail.com>"
         ];
@@ -6170,6 +6312,7 @@ rec {
         edition = "2021";
         sha256 = "0fwjy4vdx1h9pi4g2nml72wi0fr27b5m954p13ji9anyy8l1x2jv";
         procMacro = true;
+        libName = "tokio_macros";
         authors = [
           "Tokio Contributors <team@tokio.rs>"
         ];
@@ -6195,6 +6338,7 @@ rec {
         version = "0.7.10";
         edition = "2021";
         sha256 = "058y6x4mf0fsqji9rfyb77qbfyc50y4pk2spqgj6xsyr693z66al";
+        libName = "tokio_util";
         authors = [
           "Tokio Contributors <team@tokio.rs>"
         ];
@@ -6265,6 +6409,7 @@ rec {
         version = "1.0.12";
         edition = "2018";
         sha256 = "0jzf1znfpb2gx8nr8mvmyqs1crnv79l57nxnbiszc7xf7ynbjm1k";
+        libName = "unicode_ident";
         authors = [
           "David Tolnay <dtolnay@gmail.com>"
         ];
@@ -6302,6 +6447,7 @@ rec {
         version = "0.2.88";
         edition = "2018";
         sha256 = "1khgsh4z9bga35mjhg41dl7523i69ffc5m8ckhqaw6ssyabc5bkx";
+        libName = "wasm_bindgen";
         authors = [
           "The wasm-bindgen Developers"
         ];
@@ -6333,6 +6479,7 @@ rec {
         version = "0.2.88";
         edition = "2018";
         sha256 = "05zj8yl243rvs87rhicq2l1d6443lnm6k90khf744khf9ikg95z3";
+        libName = "wasm_bindgen_backend";
         authors = [
           "The wasm-bindgen Developers"
         ];
@@ -6378,6 +6525,7 @@ rec {
         edition = "2018";
         sha256 = "1chn3wgw9awmvs0fpmazbqyc5rwfgy3pj7lzwczmzb887dxh2qar";
         procMacro = true;
+        libName = "wasm_bindgen_macro";
         authors = [
           "The wasm-bindgen Developers"
         ];
@@ -6402,6 +6550,7 @@ rec {
         version = "0.2.88";
         edition = "2018";
         sha256 = "01rrzg3y1apqygsjz1jg0n7p831nm4kdyxmxyl85x7v6mf6kndf5";
+        libName = "wasm_bindgen_macro_support";
         authors = [
           "The wasm-bindgen Developers"
         ];
@@ -6440,6 +6589,7 @@ rec {
         edition = "2018";
         links = "wasm_bindgen";
         sha256 = "02vmw2rzsla1qm0zgfng4kqz52xn8k54v8ads4g1macv09fnq10d";
+        libName = "wasm_bindgen_shared";
         authors = [
           "The wasm-bindgen Developers"
         ];
@@ -6475,6 +6625,7 @@ rec {
         version = "0.4.0";
         edition = "2015";
         sha256 = "1dmpa6mvcvzz16zg6d5vrfy4bxgg541wxrcip7cnshi06v38ffxc";
+        libName = "winapi_i686_pc_windows_gnu";
         authors = [
           "Peter Atashian <retep998@gmail.com>"
         ];
@@ -6485,6 +6636,7 @@ rec {
         version = "0.4.0";
         edition = "2015";
         sha256 = "0gqq64czqb64kskjryj8isp62m2sgvx25yyj3kpc2myh85w24bki";
+        libName = "winapi_x86_64_pc_windows_gnu";
         authors = [
           "Peter Atashian <retep998@gmail.com>"
         ];
@@ -7176,6 +7328,7 @@ rec {
         version = "0.51.1";
         edition = "2021";
         sha256 = "0r1f57hsshsghjyc7ypp2s0i78f7b1vr93w68sdb8baxyf2czy7i";
+        libName = "windows_core";
         authors = [
           "Microsoft"
         ];
@@ -7193,6 +7346,7 @@ rec {
         version = "0.52.0";
         edition = "2021";
         sha256 = "1nc3qv7sy24x0nlnb32f7alzpd6f72l4p24vl65vydbyil669ark";
+        libName = "windows_core";
         authors = [
           "Microsoft"
         ];
@@ -7210,6 +7364,7 @@ rec {
         version = "0.48.0";
         edition = "2018";
         sha256 = "1aan23v5gs7gya1lc46hqn9mdh8yph3fhxmhxlw36pn6pqc28zb7";
+        libName = "windows_sys";
         authors = [
           "Microsoft"
         ];
@@ -7503,6 +7658,7 @@ rec {
         version = "0.48.5";
         edition = "2018";
         sha256 = "034ljxqshifs1lan89xwpcy1hp0lhdh4b5n0d2z4fwjx2piacbws";
+        libName = "windows_targets";
         authors = [
           "Microsoft"
         ];
@@ -7550,6 +7706,7 @@ rec {
         version = "0.52.0";
         edition = "2021";
         sha256 = "1kg7a27ynzw8zz3krdgy6w5gbqcji27j1sz4p7xk2j5j8082064a";
+        libName = "windows_targets";
         authors = [
           "Microsoft"
         ];
@@ -7737,6 +7894,7 @@ rec {
         version = "0.8.7";
         edition = "2018";
         sha256 = "0yz037yrkn0qa0g0r6733ynd1xbw7zvx58v6qylhyi2kv9wb2a4q";
+        libName = "xxhash_rust";
         authors = [
           "Douman <douman@gmx.se>"
         ];
@@ -7785,6 +7943,7 @@ rec {
         edition = "2018";
         sha256 = "0fqvglw01w3hp7xj9gdk1800x9j7v58s9w8ijiyiz2a7krb39s8m";
         procMacro = true;
+        libName = "zerocopy_derive";
         authors = [
           "Joshua Liebow-Feeser <joshlf@google.com>"
         ];
@@ -7859,6 +8018,7 @@ rec {
         version = "7.0.0";
         edition = "2018";
         sha256 = "0gpav2lcibrpmyslmjkcn3w0w64qif3jjljd2h8lr4p249s7qx23";
+        libName = "zstd_safe";
         authors = [
           "Alexandre Bury <alexandre.bury@gmail.com>"
         ];
@@ -7892,6 +8052,7 @@ rec {
         edition = "2018";
         links = "zstd";
         sha256 = "0mk6a2367swdi22zg03lcackpnvgq96d7120awd4i83lm2lfy5ly";
+        libName = "zstd_sys";
         authors = [
           "Alexandre Bury <alexandre.bury@gmail.com>"
         ];
@@ -8021,52 +8182,41 @@ rec {
                 testPostRun
               ]);
           in
-          pkgs.runCommand "run-tests-${testCrate.name}"
-            {
-              inherit testCrateFlags;
-              buildInputs = testInputs;
-            } ''
-            set -e
+          pkgs.stdenvNoCC.mkDerivation {
+            name = "run-tests-${testCrate.name}";
 
-            export RUST_BACKTRACE=1
+            inherit (crate) src;
 
-            # recreate a file hierarchy as when running tests with cargo
+            inherit testCrateFlags;
 
-            # the source for test data
-            # It's necessary to locate the source in $NIX_BUILD_TOP/source/
-            # instead of $NIX_BUILD_TOP/
-            # because we compiled those test binaries in the former and not the latter.
-            # So all paths will expect source tree to be there and not in the build top directly.
-            # For example: $NIX_BUILD_TOP := /build in general, if you ask yourself.
-            # NOTE: There could be edge cases if `crate.sourceRoot` does exist but
-            # it's very hard to reason about them.
-            # Open a bug if you run into this!
-            mkdir -p source/
-            cd source/
+            buildInputs = testInputs;
 
-            ${pkgs.buildPackages.xorg.lndir}/bin/lndir ${crate.src}
+            buildPhase = ''
+              set -e
+              export RUST_BACKTRACE=1
 
-            # build outputs
-            testRoot=target/debug
-            mkdir -p $testRoot
+              # build outputs
+              testRoot=target/debug
+              mkdir -p $testRoot
 
-            # executables of the crate
-            # we copy to prevent std::env::current_exe() to resolve to a store location
-            for i in ${crate}/bin/*; do
-              cp "$i" "$testRoot"
-            done
-            chmod +w -R .
+              # executables of the crate
+              # we copy to prevent std::env::current_exe() to resolve to a store location
+              for i in ${crate}/bin/*; do
+                cp "$i" "$testRoot"
+              done
+              chmod +w -R .
 
-            # test harness executables are suffixed with a hash, like cargo does
-            # this allows to prevent name collision with the main
-            # executables of the crate
-            hash=$(basename $out)
-            for file in ${drv}/tests/*; do
-              f=$testRoot/$(basename $file)-$hash
-              cp $file $f
-              ${testCommand}
-            done
-          '';
+              # test harness executables are suffixed with a hash, like cargo does
+              # this allows to prevent name collision with the main
+              # executables of the crate
+              hash=$(basename $out)
+              for file in ${drv}/tests/*; do
+                f=$testRoot/$(basename $file)-$hash
+                cp $file $f
+                ${testCommand}
+              done
+            '';
+          };
       in
       pkgs.runCommand "${crate.name}-linked"
         {