forked from lix-project/lix
9355ecd543
Where a `RealisedPath` is a store path with its history, meaning either an opaque path for stuff that has been directly added to the store, or a `Realisation` for stuff that has been built by a derivation This is a low-level refactoring that doesn't bring anything by itself (except a few dozen extra lines of code :/ ), but raising the abstraction level a bit is important on a number of levels: - Commands like `nix build` have to query for the realisations after the build is finished which is fragile (see 27905f12e4a7207450abe37c9ed78e31603b67e1 for example). Having them oprate directly at the realisation level would avoid that - Others like `nix copy` currently operate directly on (built) store paths, but need a bit more information as they will need to register the realisations on the remote side
91 lines
2.2 KiB
C++
91 lines
2.2 KiB
C++
#include "command.hh"
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#include "shared.hh"
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#include "store-api.hh"
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#include "sync.hh"
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#include "thread-pool.hh"
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#include <atomic>
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using namespace nix;
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struct CmdCopy : StorePathsCommand
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{
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std::string srcUri, dstUri;
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CheckSigsFlag checkSigs = CheckSigs;
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SubstituteFlag substitute = NoSubstitute;
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using StorePathsCommand::run;
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CmdCopy()
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: StorePathsCommand(true)
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{
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addFlag({
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.longName = "from",
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.description = "URL of the source Nix store.",
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.labels = {"store-uri"},
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.handler = {&srcUri},
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});
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addFlag({
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.longName = "to",
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.description = "URL of the destination Nix store.",
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.labels = {"store-uri"},
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.handler = {&dstUri},
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});
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addFlag({
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.longName = "no-check-sigs",
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.description = "Do not require that paths are signed by trusted keys.",
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.handler = {&checkSigs, NoCheckSigs},
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});
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addFlag({
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.longName = "substitute-on-destination",
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.shortName = 's',
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.description = "Whether to try substitutes on the destination store (only supported by SSH stores).",
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.handler = {&substitute, Substitute},
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});
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realiseMode = Realise::Outputs;
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}
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std::string description() override
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{
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return "copy paths between Nix stores";
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}
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std::string doc() override
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{
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return
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#include "copy.md"
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;
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}
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Category category() override { return catSecondary; }
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ref<Store> createStore() override
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{
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return srcUri.empty() ? StoreCommand::createStore() : openStore(srcUri);
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}
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void run(ref<Store> store) override
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{
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if (srcUri.empty() && dstUri.empty())
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throw UsageError("you must pass '--from' and/or '--to'");
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StorePathsCommand::run(store);
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}
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void run(ref<Store> srcStore, StorePaths storePaths) override
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{
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ref<Store> dstStore = dstUri.empty() ? openStore() : openStore(dstUri);
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copyPaths(srcStore, dstStore, StorePathSet(storePaths.begin(), storePaths.end()),
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NoRepair, checkSigs, substitute);
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}
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};
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static auto rCmdCopy = registerCommand<CmdCopy>("copy");
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