[bug#52149] [PATCH] core-updates-frozen: Update `rustc` to version 1.56.1 (from 1.54.0)

[Maxim Cournoyer]

Hello!

"(unmatched-parenthesis" <paren@disroot.org> writes:

> This amended email adds a copyright notice to crates-io.scm.
>
> ---
>  gnu/packages/crates-io.scm | 314 +++++++++++++++++++++++++++++++++++--
>  gnu/packages/rust.scm      |  11 +-
>  2 files changed, 308 insertions(+), 17 deletions(-)
>  mode change 100644 => 100755 gnu/packages/rust.scm
>
> diff --git a/gnu/packages/crates-io.scm b/gnu/packages/crates-io.scm
> index b8c4c7bd39..cf77cb2b53 100644
> --- a/gnu/packages/crates-io.scm
> +++ b/gnu/packages/crates-io.scm
> @@ -22,6 +22,7 @@
>  ;;; Copyright © 2021 Petr Hodina <phodina@protonmail.com>
>  ;;; Copyright © 2021 Ricardo Wurmus <rekado@elephly.net>
>  ;;; Copyright © 2021 Jacob Hrbek <kreyren@rixotstudio.cz>
> +;;; Copyright © 2021 (unmatched parenthesis <paren@disroot.org>
>  ;;;
>  ;;; This file is part of GNU Guix.
>  ;;;
> @@ -8134,6 +8135,96 @@ (define-public rust-caps-0.3
>          ("rust-error-chain" ,rust-error-chain-0.12)
>          ("rust-libc" ,rust-libc-0.2))))))
>  
> +(define-public rust-cargo-0.57
> +  (package
> +    (name "rust-cargo")
> +    (version "0.57.0")
> +    (source
> +     (origin
> +       (method url-fetch)
> +       (uri (crate-uri "cargo" version))
> +       (file-name
> +        (string-append name "-" version ".tar.gz"))
> +       (sha256
> +        (base32
> +         "0nw73wf2f2024qya0lgm6c7wy0vrqd521k2kwzr63gy33fnvk7ai"))))
> +    (build-system cargo-build-system)
> +    (arguments
> +     `(;; The test suite is disabled as the internal 'cargo-test-macro' and
> +       ;; 'cargo-test-support' crates are not included in the release.
> +       #:tests? #f
> +       #:cargo-inputs
> +       (("rust-anyhow" ,rust-anyhow-1)
> +        ("rust-atty" ,rust-atty-0.2)
> +        ("rust-bytesize" ,rust-bytesize-1)
> +        ("rust-cargo-platform" ,rust-cargo-platform-0.1)
> +        ("rust-cargo-util" ,rust-cargo-util-0.1)
> +        ("rust-clap" ,rust-clap-2)
> +        ("rust-core-foundation" ,rust-core-foundation-0.9)
> +        ("rust-crates-io" ,rust-crates-io-0.33)
> +        ("rust-crossbeam-utils" ,rust-crossbeam-utils-0.8)
> +        ("rust-crypto-hash" ,rust-crypto-hash-0.3)
> +        ("rust-curl" ,rust-curl-0.4)
> +        ("rust-curl-sys" ,rust-curl-sys-0.4)
> +        ("rust-env-logger" ,rust-env-logger-0.9)
> +        ("rust-filetime" ,rust-filetime-0.2)
> +        ("rust-flate2" ,rust-flate2-1)
> +        ("rust-flate2" ,rust-flate2-1)
> +        ("rust-fwdansi" ,rust-fwdansi-1)
> +        ("rust-git2" ,rust-git2-0.13)
> +        ("rust-git2-curl" ,rust-git2-curl-0.14)
> +        ("rust-glob" ,rust-glob-0.3)
> +        ("rust-hex" ,rust-hex-0.4)
> +        ("rust-home" ,rust-home-0.5)
> +        ("rust-humantime" ,rust-humantime-2)
> +        ("rust-ignore" ,rust-ignore-0.4)
> +        ("rust-im-rc" ,rust-im-rc-15)
> +        ("rust-itertools" ,rust-itertools-0.10)
> +        ("rust-jobserver" ,rust-jobserver-0.1)
> +        ("rust-lazy-static" ,rust-lazy-static-1)
> +        ("rust-lazycell" ,rust-lazycell-1)
> +        ("rust-libc" ,rust-libc-0.2)
> +        ("rust-libgit2-sys" ,rust-libgit2-sys-0.12)
> +        ("rust-log" ,rust-log-0.4)
> +        ("rust-memchr" ,rust-memchr-2)
> +        ("rust-miow" ,rust-miow-0.3)
> +        ("rust-num-cpus" ,rust-num-cpus-1)
> +        ("rust-opener" ,rust-opener-0.5)
> +        ("rust-openssl" ,rust-openssl-0.10)
> +        ("rust-percent-encoding" ,rust-percent-encoding-2)
> +        ("rust-pretty-env-logger" ,rust-pretty-env-logger-0.4)
> +        ("rust-rand" ,rust-rand-0.8)
> +        ("rust-rustc-workspace-hack" ,rust-rustc-workspace-hack-1)
> +        ("rust-rustfix" ,rust-rustfix-0.6)
> +        ("rust-same-file" ,rust-same-file-1)
> +        ("rust-semver" ,rust-semver-1)
> +        ("rust-serde" ,rust-serde-1)
> +        ("rust-serde-ignored" ,rust-serde-ignored-0.1)
> +        ("rust-serde-json" ,rust-serde-json-1)
> +        ("rust-shell-escape" ,rust-shell-escape-0.1)
> +        ("rust-strip-ansi-escapes" ,rust-strip-ansi-escapes-0.1)
> +        ("rust-tar" ,rust-tar-0.4)
> +        ("rust-tempfile" ,rust-tempfile-3)
> +        ("rust-termcolor" ,rust-termcolor-1)
> +        ("rust-toml" ,rust-toml-0.5)
> +        ("rust-unicode-width" ,rust-unicode-width-0.1)
> +        ("rust-unicode-xid" ,rust-unicode-xid-0.2)
> +        ("rust-url" ,rust-url-2)
> +        ("rust-walkdir" ,rust-walkdir-2)
> +        ("rust-winapi" ,rust-winapi-0.3))))
> +    (native-inputs
> +     `(("pkg-config" ,pkg-config)))
> +    (inputs
> +     `(("curl" ,curl)
> +       ("libssh2" ,libssh2)
> +       ("openssl" ,openssl)
> +       ("zlib" ,zlib)))
> +    (home-page "https://crates.io";)
> +    (synopsis "Package manager for Rust")
> +    (description "Cargo, a package manager for Rust.  This package provides
> +the library crate of Cargo.")
> +    (license (list license:expat license:asl2.0))))
> +
>  (define-public rust-cargo-0.53
>    (package
>      (name "rust-cargo")
> @@ -8201,7 +8292,6 @@ (define-public rust-cargo-0.53
>          ("rust-shell-escape" ,rust-shell-escape-0.1)
>          ("rust-strip-ansi-escapes" ,rust-strip-ansi-escapes-0.1)
>          ("rust-tar" ,rust-tar-0.4)
> -        ("rust-tar" ,rust-tar-0.4)
>          ("rust-tempfile" ,rust-tempfile-3)
>          ("rust-termcolor" ,rust-termcolor-1)
>          ("rust-toml" ,rust-toml-0.5)
> @@ -8309,7 +8399,7 @@ (define-public rust-cargo-metadata-0.6
>  (define-public rust-cargo-platform-0.1
>    (package
>      (name "rust-cargo-platform")
> -    (version "0.1.1")
> +    (version "0.1.2")
>      (source
>       (origin
>         (method url-fetch)
> @@ -8318,7 +8408,7 @@ (define-public rust-cargo-platform-0.1
>          (string-append name "-" version ".tar.gz"))
>         (sha256
>          (base32
> -         "1mzi60pf0z83qkzqp7jwd61xnqz2b5ydsj7rnnikbgyicd5989h2"))))
> +         "09zsf76b9yr02jh17xq925xp1w824w2bwvb78fd0gpx5m1fq5nyb"))))
>      (build-system cargo-build-system)
>      (arguments
>       `(#:cargo-inputs
> @@ -8329,6 +8419,39 @@ (define-public rust-cargo-platform-0.1
>  supported by Cargo.")
>      (license (list license:expat license:asl2.0))))
>  
> +(define-public rust-cargo-util-0.1
> +  (package
> +    (name "rust-cargo-util")
> +    (version "0.1.1")
> +    (source
> +      (origin
> +        (method url-fetch)
> +        (uri (crate-uri "cargo-util" version))
> +        (file-name (string-append name "-" version ".tar.gz"))
> +        (sha256
> +          (base32 "1szsqx6n9lvvpfnppw9xiah0d5mg8x80i5s17kv25q6lg8zn7gzj"))))
> +    (build-system cargo-build-system)
> +    (arguments
> +      `(#:cargo-inputs
> +        (("rust-anyhow" ,rust-anyhow-1)
> +         ("rust-core-foundation" ,rust-core-foundation-0.9)
> +         ("rust-crypto-hash" ,rust-crypto-hash-0.3)
> +         ("rust-filetime" ,rust-filetime-0.2)
> +         ("rust-hex" ,rust-hex-0.4)
> +         ("rust-jobserver" ,rust-jobserver-0.1)
> +         ("rust-libc" ,rust-libc-0.2)
> +         ("rust-log" ,rust-log-0.4)
> +         ("rust-miow" ,rust-miow-0.3)
> +         ("rust-same-file" ,rust-same-file-1)
> +         ("rust-shell-escape" ,rust-shell-escape-0.1)
> +         ("rust-tempfile" ,rust-tempfile-3)
> +         ("rust-walkdir" ,rust-walkdir-2)
> +         ("rust-winapi" ,rust-winapi-0.3))))
> +    (home-page "https://github.com/rust-lang/cargo";)
> +    (synopsis "Miscellaneous support code used by Cargo.")
> +    (description "Miscellaneous support code used by Cargo.")
> +    (license (list license:expat license:asl2.0))))
> +
>  (define-public rust-cargon-0.0
>    (package
>      (name "rust-cargon")
> @@ -12857,14 +12980,14 @@ (define-public rust-cty-0.2
>  (define-public rust-curl-0.4
>    (package
>      (name "rust-curl")
> -    (version "0.4.34")
> +    (version "0.4.41")
>      (source
>       (origin
>         (method url-fetch)
>         (uri (crate-uri "curl" version))
>         (file-name (string-append name "-" version ".tar.gz"))
>         (sha256
> -        (base32 "0vkm6fyizf8m9yxpv3n5pm9ag3bwlyqa6nz2ga8qkzm5y4m1cs72"))))
> +        (base32 "1qqbrvgbnzik4vlni25jwsk3ff57snmbp0zvdzdzhq9jaqrx5ihv"))))
>      (build-system cargo-build-system)
>      (arguments
>       `(#:tests? #false                  ;require internet access
> @@ -12874,7 +12997,7 @@ (define-public rust-curl-0.4
>          ("rust-openssl-probe" ,rust-openssl-probe-0.1)
>          ("rust-openssl-sys" ,rust-openssl-sys-0.9)
>          ("rust-schannel" ,rust-schannel-0.1)
> -        ("rust-socket2" ,rust-socket2-0.3)
> +        ("rust-socket2" ,rust-socket2-0.4)
>          ("rust-winapi" ,rust-winapi-0.3))
>         #:cargo-development-inputs
>         (("rust-anyhow" ,rust-anyhow-1)
> @@ -12897,7 +13020,7 @@ (define-public rust-curl-0.4
>  (define-public rust-curl-sys-0.4
>    (package
>      (name "rust-curl-sys")
> -    (version "0.4.39+curl-7.74.0")
> +    (version "0.4.51+curl-7.80.0")
>      (source
>        (origin
>          (method url-fetch)
> @@ -12905,7 +13028,7 @@ (define-public rust-curl-sys-0.4
>          (file-name (string-append name "-" version ".tar.gz"))
>          (sha256
>           (base32
> -          "0x7qhq7c3b1vmp3740yiigzm09qvkzpdf578jjrs0s3v3s3cxa07"))
> +          "085gwlfq15fxp0zvx14sf3k91ka8z8i30271i44gwd3ad9z9hc6i"))
>          (modules '((guix build utils)))
>          (snippet
>           '(begin (delete-file-recursively "curl") #t))))
> @@ -15756,6 +15879,31 @@ (define-public rust-duct-0.13
>       "A library for running child processes.")
>      (license license:expat)))
>  
> +(define-public rust-duct-0.9
> +  (package
> +    (name "rust-duct")
> +    (version "0.9.2")
> +    (source
> +      (origin
> +        (method url-fetch)
> +        (uri (crate-uri "duct" version))
> +        (file-name (string-append name "-" version ".tar.gz"))
> +        (sha256
> +          (base32 "17al305wq9qw54c1idlnjpvwyq37kd1g76z427vgfx0fyiwksmcc"))))
> +    (build-system cargo-build-system)
> +    (arguments
> +      `(#:cargo-inputs
> +        (("rust-lazycell" ,rust-lazycell-0.5)
> +         ("rust-libc" ,rust-libc-0.2)
> +         ("rust-os-pipe" ,rust-os-pipe-0.6)
> +         ("rust-shared-child" ,rust-shared-child-0.3))
> +        #:cargo-development-inputs
> +        (("rust-tempdir" ,rust-tempdir-0.3))))
> +    (home-page "https://github.com/oconnor663/duct.rs";)
> +    (synopsis "a library for running child processes")
> +    (description "a library for running child processes")
> +    (license license:expat)))
> +
>  (define-public rust-dunce-1
>    (package
>      (name "rust-dunce")
> @@ -16807,6 +16955,36 @@ (define-public rust-enumflags2-derive-0.6
>      (description "Enumflags2 implements the classic bitflags datastructure.")
>      (license (list license:expat license:asl2.0))))
>  
> +(define-public rust-env-logger-0.9
> +  (package
> +    (name "rust-env-logger")
> +    (version "0.9.0")
> +    (source
> +      (origin
> +        (method url-fetch)
> +        (uri (crate-uri "env_logger" version))
> +        (file-name (string-append name "-" version ".tar.gz"))
> +        (sha256
> +          (base32 "1hzr53r0wga51j0w5zid69ylbfizg4qdbq0vqdj6rvki94sg0b0b"))))
> +    (build-system cargo-build-system)
> +    (arguments
> +      `(#:cargo-inputs
> +        (("rust-atty" ,rust-atty-0.2)
> +         ("rust-humantime" ,rust-humantime-2)
> +         ("rust-log" ,rust-log-0.4)
> +         ("rust-regex" ,rust-regex-1)
> +         ("rust-termcolor" ,rust-termcolor-1))))
> +    (home-page "https://github.com/env-logger-rs/env_logger/";)
> +    (synopsis
> +      "A logging implementation for `log` which is configured via an 
> environment
> +variable.
> +")
> +    (description
> +      "This package provides a logging implementation for `log` which is 
> configured via an environment
> +variable.
> +")
> +    (license (list license:expat license:asl2.0))))
> +
>  (define-public rust-env-logger-0.8
>    (package
>      (name "rust-env-logger")
> @@ -25063,14 +25241,14 @@ (define-public rust-iso8601-0.1
>  (define-public rust-itertools-0.10
>    (package
>      (name "rust-itertools")
> -    (version "0.10.0")
> +    (version "0.10.1")
>      (source
>       (origin
>         (method url-fetch)
>         (uri (crate-uri "itertools" version))
>         (file-name (string-append name "-" version ".tar.gz"))
>         (sha256
> -        (base32 "06dkghwi1a6ah2103gibxnr2ys762m5x4rp75x0q43imis8p5m9p"))))
> +        (base32 "1bsyxnm20x05rwc5qskrqy4cfswrcadzlwc26dkqml6hz64vipb9"))))
>      (build-system cargo-build-system)
>      (arguments
>       `(#:skip-build? #t
> @@ -25530,7 +25708,7 @@ (define-public rust-jni-sys-0.3
>  (define-public rust-jobserver-0.1
>    (package
>      (name "rust-jobserver")
> -    (version "0.1.22")
> +    (version "0.1.24")
>      (source
>       (origin
>         (method url-fetch)
> @@ -25539,7 +25717,7 @@ (define-public rust-jobserver-0.1
>          (string-append name "-" version ".tar.gz"))
>         (sha256
>          (base32
> -         "1zg7p4khibisbvd8b1lqvvni6lr00g49d4bq2zj6m76bs7jmlbwp"))))
> +         "1yn1vxbbqv7dqir6qbfcj8h8ddjf89m5mhvm36h13xx7k5raf9dg"))))
>      (build-system cargo-build-system)
>      (arguments
>       `(#:cargo-inputs
> @@ -34079,6 +34257,28 @@ (define-public rust-open-1
>  the system.")
>      (license license:expat)))
>  
> +(define-public rust-opener-0.5
> +  (package
> +    (name "rust-opener")
> +    (version "0.5.0")
> +    (source
> +      (origin
> +        (method url-fetch)
> +        (uri (crate-uri "opener" version))
> +        (file-name (string-append name "-" version ".tar.gz"))
> +        (sha256
> +          (base32 "0lkrn4fv1h4m8gmp7ll6x7vjvb6kls2ngwa5cgsh2ix5fb6yp8sf"))))
> +    (build-system cargo-build-system)
> +    (arguments
> +      `(#:cargo-inputs
> +        (("rust-bstr" ,rust-bstr-0.2) ("rust-winapi" ,rust-winapi-0.3))
> +        #:cargo-development-inputs
> +        (("rust-version-sync" ,rust-version-sync-0.9))))
> +    (home-page "https://github.com/Seeker14491/opener";)
> +    (synopsis "Open a file or link using the system default program.")
> +    (description "Open a file or link using the system default program.")
> +    (license (list license:expat license:asl2.0))))
> +
>  (define-public rust-opener-0.4
>    (package
>      (name "rust-opener")
> @@ -44267,6 +44467,36 @@ (define-public rust-rustdoc-stripper-0.1
>       "This package provides a tool to manipulate rustdoc comments.")
>      (license license:asl2.0)))
>  
> +(define-public rust-rustfix-0.6
> +  (package
> +    (name "rust-rustfix")
> +    (version "0.6.0")
> +    (source
> +      (origin
> +        (method url-fetch)
> +        (uri (crate-uri "rustfix" version))
> +        (file-name (string-append name "-" version ".tar.gz"))
> +        (sha256
> +          (base32 "0apkjxv3z70vhnyz2kpwsivvndk6qk7kkp0rf7sg8pk7q1gy02vg"))))
> +    (build-system cargo-build-system)
> +    (arguments
> +      `(#:cargo-inputs
> +        (("rust-anyhow" ,rust-anyhow-1)
> +         ("rust-log" ,rust-log-0.4)
> +         ("rust-serde" ,rust-serde-1)
> +         ("rust-serde-json" ,rust-serde-json-1))
> +        #:cargo-development-inputs
> +        (("rust-duct" ,rust-duct-0.9)
> +         ("rust-env-logger" ,rust-env-logger-0.5)
> +         ("rust-log" ,rust-log-0.4)
> +         ("rust-proptest" ,rust-proptest-0.7)
> +         ("rust-similar" ,rust-similar-0.4)
> +         ("rust-tempdir" ,rust-tempdir-0.3))))
> +    (home-page "https://github.com/rust-lang-nursery/rustfix";)
> +    (synopsis "Automatically apply the suggestions made by rustc")
> +    (description "Automatically apply the suggestions made by rustc")
> +    (license (list license:asl2.0 license:expat))))
> +
>  (define-public rust-rustfix-0.5
>    (package
>      (name "rust-rustfix")
> @@ -48793,6 +49023,28 @@ (define-public rust-similar-1
>      (description "This package provides a diff library for Rust.")
>      (license license:asl2.0)))
>  
> +(define-public rust-similar-0.4
> +  (package
> +    (name "rust-similar")
> +    (version "0.4.0")
> +    (source
> +      (origin
> +        (method url-fetch)
> +        (uri (crate-uri "similar" version))
> +        (file-name (string-append name "-" version ".tar.gz"))
> +        (sha256
> +          (base32 "1v6h326qwjdydxk22dfz3x86zp8r1qdnajb3f37w8ngyivzmjgw2"))))
> +    (build-system cargo-build-system)
> +    (arguments
> +      `(#:cargo-inputs
> +        (("rust-unicode-segmentation" ,rust-unicode-segmentation-1))
> +        #:cargo-development-inputs
> +        (("rust-console" ,rust-console-0.14) ("rust-insta" ,rust-insta-1))))
> +    (home-page "https://github.com/mitsuhiko/similar";)
> +    (synopsis "A diff library for Rust")
> +    (description "This package provides a diff library for Rust")
> +    (license license:asl2.0)))
> +
>  (define-public rust-simple-mutex-1
>    (package
>      (name "rust-simple-mutex")
> @@ -49635,7 +49887,7 @@ (define-public rust-snap-1
>  (define-public rust-socket2-0.4
>    (package
>      (name "rust-socket2")
> -    (version "0.4.0")
> +    (version "0.4.2")
>      (source
>        (origin
>          (method url-fetch)
> @@ -49644,7 +49896,7 @@ (define-public rust-socket2-0.4
>           (string-append name "-" version ".tar.gz"))
>          (sha256
>           (base32
> -          "18ny6m1gnf6cwp5ax0b5hr36w6yg16z7faj76b31aq2jghhgqgcy"))))
> +          "05imvybc86slkbg6sj9rd1xy9a8ydn1v2bcqjqr346myqzk0zjax"))))
>      (build-system cargo-build-system)
>      (arguments
>       `(#:cargo-inputs
> @@ -52620,7 +52872,7 @@ (define-public rust-tap-1
>  (define-public rust-tar-0.4
>    (package
>      (name "rust-tar")
> -    (version "0.4.26")
> +    (version "0.4.37")
>      (source
>        (origin
>          (method url-fetch)
> @@ -52628,7 +52880,7 @@ (define-public rust-tar-0.4
>          (file-name (string-append name "-" version ".crate"))
>          (sha256
>           (base32
> -          "1lr6v3cpkfxd2lk5ll2jd8wr1xdskwj35smnh5sfb8xvzzxnn6dk"))))
> +          "0p5srm08dly2bdgkpnjdfmxvldmvi31q6yxdvjxy0lnx79fm3xfn"))))
>      (build-system cargo-build-system)
>      (arguments
>       `(#:tests? #f      ; Test tarballs not included in crate.
> @@ -59888,6 +60140,36 @@ (define-public rust-version-compare-0.0
>  numbers, and test them against various comparison operators.")
>      (license license:expat)))
>  
> +(define-public rust-version-sync-0.9
> +  (package
> +    (name "rust-version-sync")
> +    (version "0.9.3")
> +    (source
> +      (origin
> +        (method url-fetch)
> +        (uri (crate-uri "version-sync" version))
> +        (file-name (string-append name "-" version ".tar.gz"))
> +        (sha256
> +          (base32 "0kaqwjr7jlq3afh28jn052vm15z58h8szvbggwdavdng0wzy98x7"))))
> +    (build-system cargo-build-system)
> +    (arguments
> +      `(#:cargo-inputs
> +        (("rust-proc-macro2" ,rust-proc-macro2-1)
> +         ("rust-pulldown-cmark" ,rust-pulldown-cmark-0.8)
> +         ("rust-regex" ,rust-regex-1)
> +         ("rust-semver-parser" ,rust-semver-parser-0.9)
> +         ("rust-syn" ,rust-syn-1)
> +         ("rust-toml" ,rust-toml-0.5)
> +         ("rust-url" ,rust-url-2))
> +        #:cargo-development-inputs
> +        (("rust-tempfile" ,rust-tempfile-3))))
> +    (home-page "https://github.com/mgeisler/version-sync";)
> +    (synopsis
> +      "Crate for ensuring that version numbers in README files and other 
> files are kept in sync with the crate version.")
> +    (description
> +      "Crate for ensuring that version numbers in README files and other 
> files are kept in sync with the crate version.")
> +    (license license:expat)))
> +
>  (define-public rust-version-sync-0.8
>    (package
>      (name "rust-version-sync")
> diff --git a/gnu/packages/rust.scm b/gnu/packages/rust.scm
> old mode 100644
> new mode 100755
> index f7f05851f1..a1f3d757cd
> --- a/gnu/packages/rust.scm
> +++ b/gnu/packages/rust.scm
> @@ -12,6 +12,7 @@
>  ;;; Copyright © 2020 Pierre Langlois <pierre.langlois@gmx.com>
>  ;;; Copyright © 2020 Matthew James Kraai <kraai@ftbfs.org>
>  ;;; Copyright © 2021 Maxim Cournoyer <maxim.cournoyer@gmail.com>
> +;;; Copyright © 2021 (unmatched parenthesis <paren@disroot.org>
>  ;;;
>  ;;; This file is part of GNU Guix.
>  ;;;
> @@ -769,8 +770,16 @@ (define rust-1.54
>                              `("procps" ,procps)
>                              (package-native-inputs base-rust))))))
>  
> +(define rust-1.55
> +  (rust-bootstrapped-package
> +   rust-1.54 "1.55.0" 
> "07l28f7grdmi65naq71pbmvdd61hwcpi40ry7kp7dy7m233rldxj"))
> +
> +(define rust-1.56
> +  (rust-bootstrapped-package
> +   rust-1.55 "1.56.1" 
> "04cmqx7nn63hzz7z27b2b0dj2qx18rck9ifvip43s6dampx8v2f3"))
> +
>  ;;; Note: Only the latest versions of Rust are supported and tested.  The
>  ;;; intermediate rusts are built for bootstrapping purposes and should not
>  ;;; be relied upon.  This is to ease maintenance and reduce the time
>  ;;; required to build the full Rust bootstrap chain.
> -(define-public rust rust-1.54)
> +(define-public rust rust-1.56)

Thank you for this, it looks promising!

We usually split the commits as one per package touched (unless when
doing otherwise would break packages for a long series of commits).)

Were you able to test it?

After you've split your commits into per-package ones, I'll try having a
look!

Thank you,

Maxim