treewide: substitute pname for strings (by-name)

[pbsds]

Repeat of #387769, this time also limited to pkgs/by-name, part of #346453
I removed the concurrency due to git-wait only detecting concurent access and error but not actually waiting for it to be resolved.

Should be zero rebuilds.

All candidates were made using:

#!/usr/bin/env nix-shell
#!nix-shell -I nixpkgs=. --pure -i bash -p ripgrep sd jq git git-wait lix util-linux

export NIX_PATH= # no nixpkgs-overlays plz
export NIXPKGS_ALLOW_UNFREE=1
export NIXPKGS_ALLOW_INSECURE=1
export NIXPKGS_ALLOW_BROKEN=1

git-wait restore .

test -s packages.json || ( set -x;
  time nix-env --extra-experimental-features no-url-literals --option system x86_64-linux -f ./. -qaP --json --meta --drv-path --out-path --show-trace --no-allow-import-from-derivation --arg config '{ allowAliases = false; }' > packages.json
)

list_attrpath_fname_col() {
    jq <packages.json 'to_entries[] | select(.value.meta.position==null|not) | "\(.key)\t\(.value.meta.position)"' -r |
        sed -e "s#\t$(realpath .)/#\t#" |
        sed -e 's#:\([0-9]*\)$#\t\1#' |
        grep . |
        grep -iv haskell |
        grep -iv /top-level/ |
        grep -iv chicken |
        grep pkgs/by-name/ |
        grep -iv build |
        grep -E '/(package|default)\.nix'
}

while read attrpath fname col; do
    grep -qE 'repo *= *("\$\{pname\}"|pname);' "$fname" || continue

    echo | (

        echo "$attrpath"
        data="$(nix eval --log-format raw --impure --expr 'with import ./. {}; lib.attrsets.filterAttrsRecursive (n: v: !lib.isFunction v) { inherit ('"$attrpath"') pname drvPath passthru meta; drvPath2='"$attrpath"'.src.drvPath; }' --json)" || exit
        test -n "$data" || exit
        pname="$(jq <<<"$data" .pname -r)"
        test -n "$pname" || exit

        (set -x
            sd -F '${pname}'  "$pname"         "$fname"
            sd -F ' = pname;' " = \"$pname\";" "$fname"
        )

        data2="$(nix eval --log-format raw --impure --expr 'with import ./. {}; lib.attrsets.filterAttrsRecursive (n: v: !lib.isFunction v) { inherit ('"$attrpath"') pname drvPath passthru meta; drvPath2='"$attrpath"'.src.drvPath; }' --json)"
        if [[ "$data" = "$data2" ]]; then
            (set -x; git-wait add "$fname")
        else
            (set -x; git-wait restore "$fname")
            exit
        fi

        (set -x
            sd -F ' rec {' ' {' "$fname"
        )

        data3="$(nix eval --log-format raw --impure --expr 'with import ./. {}; lib.attrsets.filterAttrsRecursive (n: v: !lib.isFunction v) { inherit ('"$attrpath"') pname drvPath passthru meta; drvPath2='"$attrpath"'.src.drvPath; }' --json 2>/dev/null)"

        if [[ "$data" = "$data3" ]]; then
            (set -x; git-wait add "$fname")
        else
            (set -x; git-wait restore "$fname")
        fi

    )

done < <(list_attrpath_fname_col)

git restore .

time nix-env --extra-experimental-features no-url-literals --option system x86_64-linux -f ./. -qaP --json --meta --drv-path --out-path --show-trace --no-allow-import-from-derivation --arg config '{ allowAliases = false; }' > packages2.json

diff packages{,2}.json is empty, indicating that no package nor src derivation has changed, nor have i introduced any eval failures.
I checked and cherry-picked the changes using GIT_DIFF_OPTS='-u20' git -c interactive.singleKey=true add --patch along to some music. I then tested merging against master, staging and staging-next

Things done

• Built on platform(s)
  • x86_64-linux
  • aarch64-linux
  • x86_64-darwin
  • aarch64-darwin
• For non-Linux: Is sandboxing enabled in nix.conf? (See Nix manual)
  • sandbox = relaxed
  • sandbox = true
• Tested, as applicable:
  • NixOS test(s) (look inside nixos/tests)
  • and/or package tests
  • or, for functions and "core" functionality, tests in lib/tests or pkgs/test
  • made sure NixOS tests are linked to the relevant packages
• Tested compilation of all packages that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage
• Tested basic functionality of all binary files (usually in ./result/bin/)
• Nixpkgs 25.11 Release Notes (or backporting 24.11 and 25.05 Nixpkgs Release notes)
  • (Package updates) Added a release notes entry if the change is major or breaking
• NixOS 25.11 Release Notes (or backporting 24.11 and 25.05 NixOS Release notes)
  • (Module updates) Added a release notes entry if the change is significant
  • (Module addition) Added a release notes entry if adding a new NixOS module
• Fits CONTRIBUTING.md.

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